He has said in 1 Peter 1:16, “You shall be holy for I am holy.” God wants us to want to do what we ought to do, and it is gratitude for what He has done for us through Christ in forgiving our sins and giving us Christ’s own perfect righteousness that should cause us to want to do what we ought to do.
Grace is not opposed to effort but to earning. You cannot earn grace with your effort but love for God implies obedience which requires Spirit empowered effort. [Romans 8:13]
Grace does not eliminate the need for personal effort but rather makes our effort possible and effective for our growth in holiness.
~ Jerry Bridges
People do not drift toward holiness. Apart from grace-driven effort, people do not gravitate toward godliness, prayer, obedience to Scripture, faith, and delight in the Lord. We drift toward compromise and call it tolerance; we drift toward disobedience and call it freedom; we drift toward superstition and call it faith. We cherish the indiscipline of lost self-control and call it relaxation; we slouch toward prayerlessness and delude ourselves into thinking we have escaped legalism; we slide toward godlessness and convince ourselves we have been liberated.
~ D. A. Carson