Why is god too big for one religion?

According to 1 Corinthians 12: 13 " For by one spirit we were all baptized into one body, whether Jews or greek, whether slaves or free, and we were made to drink one spirit

Ephesians 4: 5,6 reads. "One Lord, one faith, one baptism; one God and father of all, who is over all and through all and in all".

God wants us to be in a uniting bond of peace.

One Lord: That is, Jesus Christ. Read 1 Corinthians 8: 6

One faith: That is, the one acceptable way of worshipping God. This faith is based on the one message about Christ that Christians preach. Read John 3: 16: 4: 23,24; Romans 10: 16,17; 2 Corinthians 4: 13.

One baptism: Read Matthew 28: 19,20.

So the idea that God is too big for just one religion is not in harmony with what God requires. Our united bond and peace could only be by our obediance to the One and only God Jehovah. John 17: 3 reads: " This means everlasting life, their coming to know you, the only true God, and the one whom you sent, Jesus Christ.