Israel could not look to God as their master while they were slaves to Pharaoh in Egypt. Likewise, we can’t properly serve God while we are still slaves to sin. Israel needed God’s help to come out of Egypt, and we need His help to put out sin and put on righteousness. It's not enough to just put out the leaven of sin, we must put the unleavened bread of sincerity and truth into our lives each and every day. We have been bought at a price and the only Master we serve is God.