a perfect heart. In contrast with. double heart. Compare 1 Chronicles 12:33. Heart being put by Figure of speech Metonymy (of Subject), for its desires.
one heart. See note on Psalms 133:1, and its references to 2 Samuel 19:9.
Related Commentaries of 1 Chronicles 12:38
1 Chronicles 12:38
38 All these men of war, that could keep rank, came with a perfect heart to Hebron, to make David king over all Israel: and all the rest also of Israel were of one heart to make David king.