Christ died for us and took our place. His death was the punishment for our sins. In his own body he took on all our failings and can identify with what we go through.
True sacrificial love has to come from a changed heart, changed by the Holy Spirit. Your heart’s attitude towards others will change as you pray for people in your life.
Christians are not exempt from the law. Give Caesar and God what is respectively theirs. Worship with a clean heart, obey willingly and sacrifice lovingly.