Barnes New Testament Notes

Verse 19. Who being past feeling. Wholly hardened in sin. There is a total want of all emotion on moral subjects. This is an accurate description of the state of a sinner. He has no feeling, no emotion. He often gives an intellectual assent to the truth, but it is without emotion of any kind: the heart is insensible as the hard rock.

Have given themselves over. They have done it voluntarily. In Ro 1:24, it is said that "God gave them up." There is no inconsistency. Whatever was the agency of God in it, they preferred it. See Barnes "Ro 1:21".

Unto lasciviousness. See Barnes "Ro 1:24, Ro 1:25-26.

{b} "given themselves" Ro 1:24,25