This document discusses how Christians should take off their old selfish selves and put on their new selves centered around serving God and others. It encourages believers to crucify their sinful nature, walk by the Spirit rather than the flesh, and allow Christ to live through them. Christians are called to serve God by obeying his commands, trusting his promises and word, and putting him first in all things. They are also to serve others by considering others' needs above their own, loving neighbors as themselves, and showing grace, mercy and forgiveness to all.