Tradition
St. Augustine
Tractates on the Gospel of John
Tractate 6 › Section 22
22. But do you say, “Why do you seek us if we are bad men?” That you may be good. The reason why we seek you is, because you are bad; for if you were not bad, we should have found you, and would not be seeking you. He who is good is already found; he who is bad is still sought after. Consequently, we are seeking you; return ye to the ark. “But I have baptism already.” “Though I should know all mysteries, and have prophecy and all faith, so as to remove mountains, but have not charity, I am nothing.” Let me see fruit there; let me see the olive there, and you are called back to the ark.
Source: Tractates on the Gospel of John (New Advent)