"A little leaven leavens the whole lump (Galatians 5:9).
Leaven is the enemy of the body of Christ. It represents decay and corruption.
Just A Little Is Too Much
We must dash the belief that a little sin won't kill us. People are dying physically and spiritually because of a little sin. You may go to church every Sunday, pay tithes, help the needy etc., as did some in times of antiquity, "But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction (2 Peter 2:1). Avoid false doctrine. False doctrine is the leaven which makes man's sin nature rise. Its only purpose for use is to destroy the believer.
Allow God's Holy Spirt to guide and teach you, "And you shall know the truth, and the truth shall make you free.”(John 8:32)