
Christians believe in one God but that God is not ordinary.
Christians are monotheists. This means that they believe there is only one God. It is very difficult to describe God, because everyday language is always about ordinary things but God is not ordinary.
God is 'holy', meaning special, separate and different.
It is important to remember that the God of the Jews found in the Jewish Scriptures (eg, the Torah) and the God of the Christian New Testament is one God.