Hebrews 1:5-7

Young's Literal Translation

⁵ For to which of the messengers said He ever, `My Son thou art -- I to-day have begotten thee?' and again, `I will be to him for a father, and he shall be to Me for a son?'

⁶ and when again He may bring in the first-born to the world, He saith, `And let them bow before him -- all messengers of God;'

⁷ and unto the messengers, indeed, He saith, `Who is making His messengers spirits, and His ministers a flame of fire;'