What is believing in God

After my mother started talking to me about God, I understood that if I was beautiful and intelligent, then, it is my creator who has created everything, but it is a spirit.

I learned that although God is a spirit it is as real as any of us and when we believe in Him it is obvious that according to his omnipotence and omniscience he is at our side 24 hours a day and night.

Source

To believe in God is to know that he is our father and savior and that we must submit to his word in obedience and righteousness. To believe in God is to know that we must have a friendly relationship with Him, it is to know that we have to instruct ourselves in his word and walk with Him.

To believe in God is to recognize his sovereignty and submit to his divine will, to understand that God gave his only son a living sacrifice to give us salvation and freedom.
To believe in God is to recognize his power and our limitation and come with a contrite and humiliated heart to his presence.

The Bible argues about this that Abraham did not hesitate to believe in God, we read it in Romans 4:20:
However, regarding God's promise, Abraham did not hesitate in disbelief, but strengthened in faith, giving glory to God.

Likewise, we must strengthen ourselves in faith and believe God with our hearts, because with our hearts we believe for justice. Romans 10: 10-17 New International Version (NIV)
10 For with the heart one believes for justice, but with the mouth one confesses for salvation.
11 For the Scripture says: Everyone who believes in him will not be ashamed.

He who believes in God will never be ashamed.