In the inward parts, to wit, of a man. Compare @Job_19:27Psa_51:6. Who gave thee that wit and understanding which thou hast, and which thou now usest so arrogantly and wickedly, to contend with me, and to censure my actions?
Who hath given understanding to the heart; so he limits the former general expression of the inward parts. The heart is made by the Hebrews the seat of the understanding, and is commonly put for it in Scripture.