The salvation of humanity is fundamentally the work of God. Before the foundation of the world, God elected His people, setting His affection and grace upon them (Rom. 8:29-30). In love God predestined His people for adoption (Eph. 1:4-6). Faith is a gift of grace that is given by the mercy and pleasure of God, so that no one may boast. Apart from the intervention of God, humanity cannot choose of his own accord to worship God and pursue righteousness (Rom. 3; Eph. 2:1-3). God’s sovereignty in salvation is comprehensive: from first to last, all of salvation is the work of God.