There is much Spirit-filled human effort involved in sanctification. On the one hand, “it is God who is at work in you, both to will and to work for His good pleasure” (Phil. 2:13). On the other hand, we’re commanded in 1 Tim. 4:7, “discipline (ourselves) for the purposes of godliness.” God uses means of grace to sanctify us, chief of which are the personal and corporate spiritual disciplines. In the personal realm, these include intake of God's Word, prayer, private worship, fasting, silence and solitude, etc. These are balanced by disciplines we practice with the church: public worship, hearing God's Word preached, observance of the ordinances, corporate prayer, fellowship, etc.