Thomas Aquinas

But whoever denies me before men in word, as Peter, or in action, as those of whom it says in Titus (1:16): "Some profess with their mouth that they know God, but in their deeds they deny him." I also will deny them, when he will say, as above (7:23): "I have never known you," i.e., I have never approved you.

Commentary on Matthew ↗