Hebrews 2:8

thou hast put … Rather, "Thou didst put …" by one eternal decree. This clause should be added to the last verse. The clause applies not to Christ (as in 1 Corinthians 15:25) but to man in his redeemed glory.

all things This is defined in the Psalm (Hebrews 8:8-9) to mean specially the animal world, but is here applied to the universe in accordance with its Messianic application (Matthew 28:18).

For The "for" continues the reasoning of Hebrews 2:5. The writer with deep insight seizes upon the juxtaposition of "humiliation" and "dominion" as a paradox which only found in Christ its full solution.

he left nothing that is not put under him The inference intended to be drawn is not "and therefore even angels will be subject to man," but "and therefore the control of angels will come to an end." When however we read such a passage as 1 Corinthians 6:3 ("Know ye not that we shall judge angels?") it is uncertain whether the author would not have admitted even the other inference.

But now i.e. but, in this present earthly condition of things man is not as yet supreme. We see as a fact (ὁρῶμεν) man's humiliation; we perceive by faith the glorification of Jesus, and of all humanity in Him.

under him i.e. under man.