The Christians believe in the God of Abraham. They believe and respect that God revealed himself to Abraham. The God of Abraham is believed by the Christians that he created the entire universe.
The holy book of Christianity is the bible. The bible has two sections the first testament and the second testament. The first testament covers everything before the birth of christ and the second testament covers everything after the birth of christ.
One of the Christians key beliefs is The Holy Trinity. The Holy Trinity is the Father, Son, and the Holy Spirit. We came to know about the Holy Trinity because Christ revealed it to us.
The church is the Christians holy place of worship. The church is a place for forgiveness of sins and prayer to God. Sunday is Gods day of worship so sunday is when Christians go to church.
Easter is the day Jesus, the son of God, Christ resurrected from the dead. Jesus was the son of God who died and came back from the dead to go to heaven on Easter.