John Chrysostom

Whenever there was need to punish or to honor, to forgive sins or to make laws, Christ was fully authorized to do it. Whenever Christ had to do any of these much greater things, you will not characteristically find him praying or calling on his Father for assistance. All these things, as you discover in the text, he did on his own authority.

On The Incomprehensible Nature Of God 10.19 ↗

Methodius of Olympus

But by means of that light, which is of one substance with Thee, Thou hast given light to those that sat in darkness and in the shadow of death, in order that in Thy light they might see the light of knowledge; and it has seemed good to Thee, by means of our Lord and Creator, to fashion us again unto immortality; and Thou hast graciously given unto us a return to Paradise by means of Him who separated us from the joys of Paradise; and by means of Him who hath power to forgive sins Thou hast blotted out the handwriting which was …

Methodius Oration Concerning Simeon and Anna ↗

Bede

But that you may know that the Son of man has power, etc. If he is also God according to the Psalmist, who as far as the east is from the west has removed our transgressions from us, and the Son of man has power on earth to forgive sins, therefore he himself is both God and the son of man, so that Christ as man can forgive sins through the power of his divinity, and the same God Christ, through the frailty of his humanity, can die for sinners. …

On the Gospel of Mark ↗