Answer:

Ah, Lord GOD! Behold, You have made the heavens and the earth by Your great power and outstretched arm. There is nothing too hard for You… (JEREMIAH 32:17).

PSALM 147:5, NEHEMIAH 9:6, MARK 10:27

We hear a lot about God’s power. Take a look at our verse. God’s almighty power made the heavens and the earth, and there is nothing too hard for God. Well, I want you to learn another big word . . . omnipotent. The Bible clearly teaches that God is omnipotent, meaning He is all powerful. He is Almighty God, He is Lord, the Creator of all things, and He never gets tired! There is none like God. 

Although we can’t completely understand His power, we know He is infinite in power (meaning there is no way to measure it), and all power ultimately comes from Him, and the source of His power never becomes exhausted. God can do anything He wants whenever He wants, and nothing is impossible for Him. I am so glad that I serve a God who is all powerful!

Source: https://answersingenesis.org/kids/creation/how-does-god-get-his-power/