Evil spirits always want to entice us with what we should not have but it's rarely in the form of an outright transgression. It's usually something on the thin line between what is acceptable and what is not, something that our flesh can slip past our reborn spirits.
Paul, in Galatians 5:7-8, says, "You were doing well in your faith." He then asks, "Who persuaded you to not continue in the truth? It was not God the Father who called you to follow his Son Jesus." He goes on to share that he believes that through the Lord they will understand and remember the truth about the leaven of lies and seduction.
We may think that little, questionable indulgences are not that bad but a little leaven will eventually leaven the whole attitude and direction of the person. It will cripple our walks in Christ. (Galatians 5:9) Succumbing to those minor fleshly desires will wreak havoc in our spiritual lives over time.
Temptation and enticement to subtle, ungodly things are not insignificant. Evil spirits are not out to play with us. They are out to destroy us in as many ways and from as many directions as they can. The more that we brush off accepting small allurements and discount receiving little inducements the more destruction that rulers of the darkness of this world can do. Just as we eat and drink the Word of God everyday, they eat and drink plans for our destruction every day.
When we work with God as he shows us the little issues, we allow our spiritual eyes to be opened so that we can see what the enemy is doing. We can perceive evil influence and control in our lives. We can obtain the answers that we need and information on directions to take regarding issues in our lives. Leavening takes over. That's what it's designed to do. Depending on what the leaven is, it can also be beneficial.
Adding the leaven of the Word by reading and studying it everyday will transform us. The Holy Word is living, like leaven, and will cause us to become more like Christ and draw closer to God. We don't have to be overcome by all of the Christian practices and traditions that we are judged for not being able to keep. When we focus upon putting the Word inside of us, we will please God and grow in him. A little leaven leavens the whole person, for bad or for good.