The Apostle Paul
Romans 8:15BSB·traditional attribution

For you did not receive a spirit of slavery that returns you to fear, but you received the Spirit of adoption to sonship, by whom we cry, “Abba! Father!”

John Calvin Reformed @genevareformer

15. He now confirms the certainty of that confidence, in which he has already bidden the faithful to rest secure; and he does this by mentioning the special effect produced by the Spirit; for he has not been given for the purpose of harassing us with trembling or of tormenting us with anxiety; but on the contrary, for this end — that having calmed every...

Matthew Henry Presbyterian @wholebiblehenry

In these verses the apostle represents two more excellent benefits, which belong to true believers. I. Life. The happiness is not barely a negative happiness, not to be condemned; but it is positive, it is an advancement to a life that will be the unspeakable happiness of the man (Rom 8:10, Rom 8:11): If Christ be in you. Observe, If the Spirit be in us, Christ is in us.

Commenting on Romans 8:10-16

John Gill Reformed Baptist @doctorgill

For ye have not received the spirit of bondage again to fear,.... By "the spirit of bondage" is meant, not the Spirit of God: for this is just the reverse of his character, who is a "free Spirit", or , "a Spirit of liberty"; and is contrary to his work and office, which is to show a soul its state of bondage by nature, and...