The Lord said “You shall love the Lord your God with all your heart, and with all your soul, and with all your strength, and with all your mind; and your neighbor as yourself.” Love is forgiveness, and the true symbol of our forgiveness from God is forgiving others. Also, we understand others as a symbol of being understood by God, and accept others as a symbol of acceptance of God. The Lord’s Prayer also says that one who forgives others can be forgiven.
What is really important to us is a life after belief. Resembling the personality of Jesus and loving a life is a life of a saved one. God called us because He wants us to change in a way we resemble Jesus, a man of personality.