The believer who seeks after becoming a man after the heart of God just as David was, must be circumcised in his heart and sanctify God in his conducts before men. He must love pureness of heart, then shall the King be his friend, and he will see God. He must serve God in the singleness of his heart, with right and godly motive of service as unto the Lord before men. He must walk with God and after him with a perfect heart: being mindful of him, he should be spiritually minded: this is the only way to continually lay hold of God and acess his heart. For who hath known the mind of the Lord, that he may instruct him? but we have the mind of Christ.