As faith in Jesus Christ is the creative work of the Holy Spirit, the maturity of faith and the fruitfulness of it is also the work of the Holy Spirit; for without Jesus being given to us in Word and Sacrament by the Holy Spirit, we can do nothing (John 15:5). God has prepared works for us to do, showing that we are His workmanship and that He works in us, both to will and to work for His good pleasure (Ephesians 2:10; Philippians 2:13).