Who is God - JSS1 Christian Religious Studies Past Questions and Answers - page 1

God is a supreme being because he is omnipotent, Creator, Perfection, Eternality, Omnipresence, Omniscience.

An attribute is the nature, characteristics, quality or behavior of someone or something.

OMNIPOTENT means " that which is all powerful". Nothing can be compared to that power.

1. GOD IS A SOVEREIGN CREATOR: Being sovereign means being a supreme ruler. That is, having authority and control over the territories and kingdom over which he rules. A creator is someone who brings someone or something into existence.
2. GOD IS OMNIPRESENT: OMNIPRESENT means "Being everywhere at the same time". God is everywhere at the same time. He is in heaven and at the same time, he is on Earth. In the book of Jonah, when Jonah intended to run away from God after refusing to preach to the people of Nineveh, God saw him at the place where he went to hide. 
3. GOD IS OMNIPOTENT: OMNIPOTENT means " that which is all powerful". Nothing can be compared to that power. God is omnipotent because he is all powerful. He is the greatest of all the powers in this world. 

Sovereign typically refers to the supreme authority and power of God.