Catechism of the Catholic Church

God is the Father Almighty, whose fatherhood and power shed light on one another: God reveals his fatherly omnipotence by the way he takes care of our needs; by the filial adoption that he gives us ("I will be a father to you, and you shall be my sons and daughters, says the Lord Almighty."): finally by his infinite mercy, for he displays his power at its height by freely forgiving sins. (2777, 1441)