Hebrews 1:6

And when he again bringeth in the firstborn into the world, he saith, And let all the angels of God worship him.

Scholars say that the author here quoted from the Septuagint translation of Psalms 97:7, the common versions reading, "Worship him all ye gods." Christ is here called the "firstborn," a favorite expression of Paul who referred to Christ as "the firstborn from the dead" (Colossians 1:18); and as "the firstborn of all creation" (Colossians 1:15). This expression emphasizes the honor and dignity and primacy of Christ.

Of special interest is the word "again," in which it appears that God's commanding of all the angels to worship Christ has special reference to a second time that Christ is brought into the world; and thus this has been applied to the second coming. For example, Hewitt, in Tyndale's Commentary, said, "The reference would seem to be to the second coming of Christ."[14] However, there is one vast consideration that requires that it be construed as a reference to the resurrection of Christ from the dead; because it is certain that angels now worship Christ and that their doing so does not wait upon some future event like the second coming. Besides, Christ's being raised from the dead was genuinely a coming "again" into the world, his descent into Hades separating between the two times he was in the world. If it should be insisted that this view would relegate the ultimate coming of Christ in judgment to the status of a third coming, this is not logical; because the two comings of Christ, if they be so viewed, were so intimately connected that they stand as one. The big point of this quotation, however, should not be lost sight of; and that is the fact that God has commanded the angels to worship Christ. Great and glorious as angels assuredly are, Christ is infinitely above them.