Scripture presents powerful claims of Jesus Christ attesting to His deity, that is, His coequality with God the Father. The natural response of the unbelieving Jews only adds to the confirmation of what Jesus affirmed: “Because You, being a man, make Yourself out to be God” (John 10:33; see also John 5:17-18; 8:58-59). In addition to this is the clear testimonies of the apostles presenting Christ the Son as fully God and fully man, distinct from the Father and the Holy Spirit (cf. Matt. 12:6; 28:19; John 1:1, 18; 20:28; 1 Cor. 2:8; Col. 2:9; Titus 2:13; 2 Pet. 1:1; Jude 1:4). Their Christology is expressed coherently and exegetically.
Along with the testimonies of Jesus and the apostles, (and the OT affirmations), we find clear affirmations of the Son’s deity made by God the Father especially in the prologue of Hebrews. In fact, it was the Father’s testimony that Jesus used to authenticate His own testimony (see John 5:31-32; 8:16-17).
In the NT, God the Father clearly substantiated the deity and unipersonality of His Son, Jesus Christ, by the following:
1) The Father openly declared Jesus to be the “Son of God” (cf. Matt. 3:16-17; 17:5)
2) The Father commanded all of His angels to worship the Son (cf. Heb. 1:6)
3) The Father directly addressed the Son as “the God” whose throne is eternal (cf. Heb. 1:8-9)
4) The Father directly addressed the Son as the “Lord,” that is, the Yahweh of Psalm 102:25-27, the unchangeable Creator (cf. Heb. 1:10-12)
“SON OF GOD”
The theological significance of the title “Son of God cannot be ignored or denied. The biblical evidence is clear: The unique way that Jesus applied this title to Himself and the unique way that the apostles applied it to Him show that it was a title of full deity—tantamount to “God the Son” (cf. John 1:18; 5:17-18; 10:30-33; 19:7; Rom. 1:1-4; Heb. 1).
The Father’s attestation of the full deity of Christ and His coequality with Him, in very nature, starts with His open declaration of Jesus’ Sonship. The Father claimed Jesus was His Son and Jesus claimed the reverse—namely, that He was the Father’s Son. So when the Father openly announced that the person of Christ is His Son, He affirmed in the strongest way the Son’s essential and ontological deity. Jesus’ Sonship was openly declared at several different times throughout His life: At His baptism (Matt. 3:16-17); at His Transfiguration (Matt. 17:5); and in reference to His resurrection (cf. Acts 13:33; cf. also Heb. 1:5). We also read of Jesus’ declaration of Sonship in Romans 1:1-4, where the Son was “declared [‘marked out’] the Son of God with power by the resurrection from the dead, according to the Spirit of holiness.” The Father’s open declaration of Jesus’ Sonship demonstrates to the world that Jesus Christ is the “one and only/unique Son” (monogenēs huios), God in the flesh. Again, “The Jews were seeking all the more to kill Him, because He . . . was calling God His own Father, making Himself equal with God” (John 5:18; cf. 10:30ff).
ALL THE ANGELS COMMANDED TO WORSHIP THE SON (cf. Heb. 1:6)
Contextually (similar to the prologue of John), the prologue of Hebrews is a well-defined contrast between all created things (viz., angels and the heavens and the earth) and the eternal divine Son (cf. vv. 3, 6, 8), who was worshiped as God (v. 6), and presented as Yahweh, the unchangeable Creator (cf. vv. 2, 10-12). After the author provides some of the most potent passages proving the Son’s deity (esp. vv. 2-3), from verses 5-13, to intensify his antithesis (i.e., the eternal Son vs. creation), the author moves from his own inspired words to the words of God the Father.
In Hebrews 1:6, an undeniable verification of the Son’s deity is evidenced by the fact that God the Father commands all of His angels to “worship” (proskuneō) the Son: “And when He again brings the firstborn into the world, He says, ‘And let all the angels of God worship Him.’” The Father’s command to His angels to give religious worship to His Son clearly proves the Son’s essential deity—for creature worship was strictly forbidden by God (cf. Exod. 20:5). There are many places in both the OT and NT where the Son was worshiped in a religious context, by all the angels (cf. Heb. 1:6); by men (cf. Dan. 7:14; Matt. 14:33; John 9:38); and by every creature (cf. Rev. 5:13-14).
DIRECT ADDRESS AS “THE GOD” WHOSE THRONE IS ETERNAL (cf. Heb. 1:8)
Thus far, the author of Hebrews has exhibited so precisely the very object of Christian evangelism and historic faith: The two natures of the person of the Son, as fully God (esp. vv. 2-3, 6) and as fully man who made “purification of sins” (v. 3). In verses 8-9, the Father demonstrates further the exalted divine status of His beloved Son:
“But of the Son He says” ‘Your throne, O God, is forever and ever, And the righteous scepter is the scepter of His kingdom. 9 You have loved righteousness and hated lawlessness; Therefore God, Your God, has anointed You With the oil of gladness above Your companions.’”
Here the Father addresses the Son (pros de ton huion, “but regarding the Son”) as ho theos (“the God”) affirming that the Son’s throne is “forever and ever.” This is a citation from the LXX of Psalm 45:6-7. Although some have attributed the Psalm to David, Solomon, or a Persian king, the original sense of the Psalm is purely Messianic. The writer here seems to envisage the ideal king, a “magnificent and beautiful prince—a prince riding prosperously in his conquest” (Barns). In the same way, Isaiah speaks of the Messiah as “Mighty God” and “Prince of Peace” (Isa. 9:6). Note the rendering of the ancient Targum of Psalm 45:7, which is a direct address to Yahweh Himself: “Thy throne of glory, O Lord endures for ever and ever.” Further, the targumist applies verse 3 to the Messiah: “Your beauty, O King Messiah, is greater than the sons of men; the spirit of prophecy has been placed on your lips; because of this the Lord has blessed you forever.” None of Israel’s kings were ascribed as “God” whose throne is forever. The full deity of the Christ is a constant theme in the OT (esp. Dan. 7:9-14; Isa. 9:6-7).
In Hebrews 1:8, the Father positively affirms that His Son, Jesus the Christ, is “the God” whose throne is forever and ever. That the Father addresses the Son as “God” (a distinct person) is precisely what the doctrine of the Trinity teaches. In the Gospels, the Son addresses the Father as “God,” while here, the Father addresses the Son as “God.” Just as the Son addresses the Father as “Lord of heaven and earth” (Luke 10:21), in Hebrews 1:10, the Father addresses the Son as the “Lord” (i.e., as the Yahweh of Ps. 102:25-27) who made the heavens and the earth (cf. also John 1:3; 1 Cor. 8:6; Col. 1:16-17; Heb. 1:2).
Unitarian groups (esp. JWs) consistently deny the direct address rendering and syntax of the passage by translating theos (“God”) either as a nominative, “God is your throne” (as in the NWT) or as a predicate, “Your throne is God.” However, the vocative of direct address rendering of theos (i.e., the Father addressing the Son as “God”) is confirmed by 1) the LXX of Psalm 45:6-7 where Elohim (“God”) is in direct address, 2) the Targum of Psalm 45:6 where “Lord” is in direct address, 3) all ancient versions of Psalm 45, 4) most English translations, 5) biblical commentators, historically and presently, 6) the context of the prologue, which presents a defined contrast between all created things and the eternality of the Son, and 7) in verse 10, the Greek term for “Lord” is in the actual vocative case of address (kurie), which unmistakably shows that the Father addressed the Son as “God” and as the “Yahweh” (“Lord”) of Psalm 102:25-27, as we will discuss below.
DIRECT ADDRESS AS “LORD”—NAMELY, THE YAHWEH OF PSALM 102:25-27 (cf. Heb. 1:10-12)
“You, Lord, in the beginning laid the foundation of the earth, and the heavens are the works of Your Hands. . . .” (v. 10). God the Father attributes the creation of the heavens and earth to the Son (as did the author in v. 2). This passage (and the entire chapter) is devastating to Oneness advocates who see the “Son” as representing merely the humanity (non-divinity) of Jesus and, of course, most challenging for Muslims and JWs who likewise deny the deity of the person of the Son.
In verses 10-12, the Father applies Psalm 102:25-27, which speaks of Yahweh as the unchangeable Creator, to the Son! As we saw, starting in verse 5, the author moves from his own words, to the Father’s words regarding the Son. Hence, verse 10 does not warrant any break in context or switch of speaker to recipient—it is the Father speaking tothe Son: “You, Lord, in the beginning.” The connective conjunction “and” naturally looks back to the addressee in verse 8: “But of the Son He says.” As pointed out, kurios (“Lord”) actually appears in the vocative form, kurie: “You, Lord [kurie], in the beginning.” This irrefutably shows that the Father is speaking to the Son. It also supports the vocative force of theos in verse 8: “But of the Son He says, ‘Your throne, O God, is forever and ever.’” Hebrews 1:10-12 is a citation of Psalm 102:25-27 (from the LXX), which describes Yahweh as the unchangeable Creator. Hence, the Father identifies His Son with the Yahweh of this Psalm, the unchangeable Creator.
The Christian religion is established by its Founder, Jesus Christ, God incarnate, Creator of all things. This is confirmed by the OT prophets, NT apostles, Christ Himself, and God the Father. The Father affirmed His Son’s ontological status as God by 1) making open declarations as to Jesus’ Sonship, 2) commanding all of the angels in heaven to worship the Son, and 3) directly addressing the Son as “the God” whose throne is eternal and as the Yahweh of Psalm 102:25-27, the unchangeable Creator.
 Cf. Genesis 19:24; Daniel 7:9-14 (cf. Mark 14:62); Isaiah 9:6; “angel of the Lord” references; etc.
 The term translated “worship” is an aorist active imperative verb. A verb in the imperative mood indicates a commandment/request. But when the imperative is in the aorist tense, the commandment stressing urgency, a “do it now” kind of verb—namely, worship the Son now!
 The word “worship” appeared in the JWs’ New World Translation at Hebrews 1:6 from 1961 (the first complete ed.) to 1970. However, due to the damaging implications of the Son being worshiped, the Watchtower replaced “worship” with “obeisance,” meaning, honor, respect, etc. in all subsequent editions.
 The Targum was an ancient Aramaic translation (in explanations and paraphrases) of the Hebrew OT. In the post-exilic period, Aramaic began to be broadly spoken in the Jewish community in conjunction with Hebrew. The earliest known portions of the Targum were found among the Dead Sea Scrolls (e.g., Job, Cave 11).
 In verse 8, we noted that although theos technically is in the nominative case, it clearly carries the vocative force of direct address. In fact, in every occurrence in the NT, where God is being addressed, theos appears in the nominative case except in Matthew 27:46, where both occurrences of theos are actually in the vocative case—Thee mou, thee mou (“My God My God”).
 The LXX reads: kat’ archas su kurie (lit., “In [the] beginning, You, Lord”). Hebrews 1:10-12 is utterly shattering to all who deny the Trinity and the deity and unipersonality of the Son since God the Father identifies His Son with the Yahweh of Psalm 102:25-27—the unchangeable Creator whose “years will not come to an end.”