They are all gone out of the way, they are together become unprofitable; there is none that does good, no, not one.
All Commentaries on Romans 3:12 Go To Romans 3
Ambrosiaster
AD 400
No one doubts that those who do not look to God for help are inclined to seek help from vain things, and vanity is an idol. Thus they become useless. Once that happens they cannot do good either, for those who have already fallen just go from bad to worse. Commentary on Paul’s Epistles.