Jeremias 17
Ambrose of Milan · Comentário Patrístico (catena)
Jeremias 17:9
The apostle says, "For God, sending his own Son in the likeness of sinful flesh, and for sin condemned sin in the flesh, that the righteousness of the law might be fulfilled in us." He does not say "in the likeness of flesh," for Christ took on himself the reality, not the likeness, of flesh. Nor does he say in the likeness of sin, for he did not sin but was made sin for us. Yet he came "in the likeness of sinful flesh." That is, he took on him the likeness of sinful flesh, the likeness, because it is written, "He is man, and who shall know him?" He was man in the flesh, according to his human nature that he might be recognized, but in power he was above humanity, that he might not be recognized, so he has our flesh but has not the failings of this flesh. — Concerning Repentance 1.3.12
Jeremias 17:16
For I love those presbyters and deacons who when they have performed their mission will not allow themselves to remain absent any longer from their duties. For the prophet says, I have not been weary in following thee. And who can be weary in following Jesus, when He Himself says, Come unto Me all ye that labour, and are heavy laden, and I will give you rest. Let us therefore never cease from following Jesus, which if we do we shall never fail, for He gives strength to them that follow Him. The more nearly you approach to the Source of power the stronger you will be. Often, while we are thus following Him, the adversaries say to us, Where is the word of the Lord? let it come now. But let us not grow weary in following Him, let us not be turned aside by meeting with this crafty question. It was said to the prophet, when he was thrown into prison, when he was cast into the pit of mire, Where is the word of the Lord? let it come now. But he followed him so much the more, and therefore attained the prize, and received the crown; for following Jesus he was not weary; for there is no weariness in Jacob, neither shall sorrow be in Israel. — Letter 82.2-3