Is there only one God?
Here's the answer:
God tells us in the Bible that He is the one and only God.
Many people believe in different gods. These false gods aren't the true God. God is the one who created all things and rules over all things. He has all power and is perfectly good. No one else is like Him. The one true God tells about Himself in the Bible.
God is three Persons: the Father, the Son, and the Holy Spirit. But He isn't three gods. When we say God is three Persons, we don't mean that He is three people or men. By "person," we mean that the Father, Son, and Spirit are real beings. Each is fully God. Each Person of God does different things, but all together they are one God. This is called the Trinity. The Trinity is hard to understand, but we believe it's true because God tells us He is three in one in the Bible.
"I am the LORD. There is no other LORD. I am the one and only God" (Isaiah 45:5a).
"The LORD is God in heaven above and on the earth below. Today you must agree with that and take it to heart. There is no other God" (Deuteronomy 4:39).