God’s all-powerful action for our Salvation is seen especially in Christ’s Resurrection from the dead.

Though man was made by God in a state of holiness, he rebelled against God of his own free will, being tempted to do so by the devil. In order to free man from the slavery of sin and to make him holy once more, God sent His Son to earth to take on human flesh, to suffer and die on the Cross, and to rise gloriously from the dead.
Thus it was by means of the Resurrection that God showed His
all-powerful action for our Salvation.