And he that doubts is condemned if he eats, because he eats not of faith: for whatever is not of faith is sin.
All Commentaries on Romans 14:23 Go To Romans 14
Ambrosiaster
AD 400
It is true that if someone thinks it wrong to eat but does so anyway, he is condemned. For he makes himself guilty when he does what he thinks he ought not to. If someone acts against his better judgment in a matter of conscience, then Paul says that it is a sin. Commentary on Paul’s Epistles.