Brothers, if someone is caught in sin, you who are spiritual should restore him with a spirit of gentleness, looking to yourselves, because that could have been you.OK, the text doesn't exactly say that, but I think that's the point, isn't it? Someone caught cheating, lying, etc. -- whoever it is didn't wake up one day and say, "Today I'm going to embark on a course that will ruin my life and destroy everything important to me, wreaking havoc on those who love and trust me - a decision I'll regret for decades."Galatians 6.1
And let us not lose heart in doing good, for in due time we shall reap if we do not grow weary. So then, while we have opportunity, let us do good to all men, and especially to those who are of the household of the faith.As my friend Jim says, the reason it's a command is that it's hard. If it were easy or natural to just keep on going, we wouldn't need a command here. But Paul gives us this command "Let us not lose heart..." and he gives a reason: good stuff will happen if we don't give up.Galatians 6.9-10 (NASB, I think)