Bede, on Prov 22:11

“He that loveth cleanness of heart, for the grace of his lips shall have the king for his friend.”

“"He who loves purity of heart," etc. He who rightly preaches with a pure heart will be numbered among those, about whom the prophet says to the same King and Creator of the ages: "But to me, your friends, O God, are greatly honored" (Ps. CXXXVIII). For if anyone shows the grace of lips by preaching rightly, but neglects to keep the purity of heart, such a one is by no means to be considered able to enjoy the friendship of the eternal king.”

Imported from an open dataset — not yet checked against the printed edition.