There is one body and one Spirit, just as you were called in one hope of your calling; one Lord, one faith, one baptism; one God and Father of all, who is above all, and through all, and in you all. (Ephesians 4:4-6)
One God And One Father
One: a grammatical word indicating a single thing or unit, and not two or more. Used to distinguish something.
One God: a powerful statement indicating a single being and not two or more. Used to separate from any other god.
One Father: a familial relationship indicating a single gathering of people and not two or more. Used to separate from all other families.
One God and one Father is the affirmation that man cannot serve God in multiple ways by his own choosing and enjoy the blessings of the Father. There is only one way to Heaven and that is by His one Son who died on one cross to accomplish the one thing man needed most. The Bible is the one book that can help man find the one joy of eternal life. One God and one Father declares one truth and one truth alone.
Man has only one choice for eternal life. That choice is found in one God and one Father. Jesus is the one way, the one truth and the one life. There is one church, one hope and one faith. One door is open. Not two or more. One.