God is like a 3-in-1. He is God the Father, the Son, and the Holy Spirit. The Son, Jesus, was a boy. We know this because the angle comes to Marry and says "...You will bare a
… son and you shall call him Jesus..." This is kind of confusing but this is the only way I know how to say it. Jesus is the Son. God is the Father. They are one. Answer How do I now God is a 'he'...? Well, simple, she isn't necessarily! The Trinitarian God of the Christian (Father, Son and Holy Spirit) is usually referred to as 'he' although truthfully God could equally be thought of as neither he nor she. Biblically the 'Father' is called as such as this best describes his characteristics: a good father loves his children, acts as a mentor, provider, but can also discipline us too.... but in a loving way. The Son, Jesus, is masculine as Jesus was a male, and lived a totally human life as well as being God incarnate. However, the Holy Spirit is feminine, despite us still calling the Holy Spirit 'he'. In Old testament Hebrew the word for 'Spirit' is ' ruac'h' . In New Testament Greek the word for Spirit is 'pneuma' . Both words are feminine nouns not masculline, and can therefore represent the feminine side of God. ( Full Answer )