From the Catechism of the Catholic Church:
Paragraph 3. The Almighty
268
Of all the divine attributes, only God’s omnipotence is named in the Creed: to confess this power has great bearing on our lives. We believe that his might is universal, for God who created everything also rules everything and can do everything. God’s power is loving, for he is our Father, and mysterious, for only faith can discern it when it "is made perfect in weakness."103
"He does whatever he pleases"104
269
The Holy Scriptures repeatedly confess the universal power of God. He is called the “Mighty One of Jacob,” the “LORD of hosts,” the “strong and mighty” one. If God is almighty “in heaven and on earth,” it is because he made them.105 Nothing is impossible with God, who disposes his works according to his will.106 He is the Lord of the universe, whose order he established and which remains wholly subject to him and at his disposal. He is master of history, governing hearts and events in keeping with his will: "It is always in your power to show great strength, and who can withstand the strength of your arm?"107
And to help you out with the next question I predict you’re about to ask
The mystery of God’s apparent powerlessness
272
Faith in God the Father Almighty can be put to the test by the experience of evil and suffering. God can sometimes seem to be absent and incapable of stopping evil. But in the most mysterious way God the Father has revealed his almighty power in the voluntary humiliation and Resurrection of his Son, by which he conquered evil. Christ crucified is thus "the power of God and the wisdom of God. For the foolishness of God is wiser than men, and the weakness of God is stronger than men."111 It is in Christ’s Resurrection and exaltation that the Father has shown forth "the immeasurable greatness of his power in us who believe."112