There is no other god. The Bible alone is our source of knowledge and faith. As a result, all people need to be rescued from their sin. He died on the cross, bearing our sin and removing it from us, and rose again bodily from the dead to defeat death itself. It is a response of praise and gratitude.
Christians remain sinners and daily acknowledge their sin.
The Church's ministry of Word of Sacrament helps Christians acknowledge and confess their sins, and find daily forgiveness, joy and peace of conscience.