Titus 1:15

1:15 All is pure to those who are pure. But to those who are corrupt and unbelieving, nothing is pure, but both their minds and consciences are corrupted.

Titus 2:8

2:8 and a sound message that cannot be criticized, so that any opponent will be at a loss, ¹  because he has nothing evil to say about us.

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¹ tn Or “put to shame.”