9. both—rather, "The things also which ye have learned … these practice"; the things which besides recommending them in words, have been also recommended by my example, carry into practice.
heard—though ye have not yet sufficiently "received" them.
seen—though ye have not as yet sufficiently "learned" them [Bengel].
and—"and then," as the necessary result (Php 4:7). Not only "the peace of God," but "the God of peace" Himself "shall be with you."