2 Peter 3:17-18

You therefore, beloved... be on your guard so that you are not carried away by the error of unprincipled men and fall from your own steadfastness, but grow in the grace and knowledge of our Lord and Savior Jesus Christ.

2 Peter 3 17 18

The Victory of Eucharistic Truth over Heresy, 1626.
Peter Paul Rubens (Flemish, 1577-1640)