What is the main focus in our lives? You probaly already know that our main focus should always be Christ. The first commandment says, "You shall have no other Gods before me." This means that the most precious thing in our lives should be God, nothing should be more valuble to us than him... but sometimes this is not the case.
Legalism is a sign that Christ is not our main focus. Legalism is when we add man made rules to God's law, and we get so caught up in pressing that rule on other Christians that we forget what really matters. When our focus is on our made up rules, it is not on Christ. We never want this to be the case, so in order to keep Christ our main focus we must always look to scripture for what God would have us do. Life has many distractions, we can easily get caught up in the things of this world. legalism is one of those things, and we should always strive not to become legalistic.