Augustine of Hippo

But let us hear what they next confess: "we have sinned with our fathers: we have done amiss, and dealt wickedly" [Psalm 106:6]. What means "with our fathers"?..."Our fathers," he says, "regarded not Your wonders in Egypt" [Psalm 106:7]; and many other things also, he does relate of their sins. Or is, "we have sinned with our fathers," to be understood as meaning, we have sinned like our fathers, that is, by imitating their sins? …

Exposition on Psalm 106 ↗

Jerome

We have sinned with our fathers. As sons we have followed our fathers: we have done what our fathers also did. 'For he has shut up all under sin, that he might have mercy on all.' We have acted unjustly, we have committed iniquity. Note carefully what he says: We have sinned with our fathers, we have acted unjustly, we have committed iniquity. Did he say, we have acted impiously? It is one thing to be a sinner and unjust, another to be impious. …

Homily 32, on Psalm 105 ↗