Three God or One God?

I read Bible thousands of times but I never read about 3 gods in Bible. Bible says there is only one God. We should worship only one God.

Ref. from OT:-
Deuteronomy 6:4 "Hear, O Israel: The LORD our God, the LORD is one!

Ref. from NT:-
Mark 12:32, "So the scribe said to Him, "Well said, Teacher. You have spoken the truth, for there is one God, and there is no other but He."

Romans 3:30, "since there is one God who will justify the circumcised by faith and the uncircumcised through faith."

1 Corinthians 8:6 Therefore concerning the eating of things offered to idols, we know that an idol is nothing in the world, and that there is no other God but one.

Where does it say that Bible tell us to worship 3 gods? from Genesis to Revelation I see only one God...