To testify to in writing; to make a declaration in writing, under hand, or hand and seal, to make known or establish a fac. The judges shall certify their opinion to the chancellor, and upon such certificate, the decree is usually founded. The Judge shall certify under his hand, that the freehold came chiefly in question.

To give certain information to; applied to persons. We have sent and certified the king. Ezra 4:74.

To give certain information of; applied to things. This is designed to certify those things that are confirmed of Gods favor. It is followed by of, after the person, and before the thing told; as, I certified you of the fact.