When does your liberty in the Lord become sin? Answer: When you use your liberty as a cloke of maliciousness toward someone else, 1 Peter 2:16. For bretheren, ye have been called unto liberty; only use not your liberty for an occasion to the flesh, but by love serve one another, Gal 5:13. But take heed lest by any means this liberty of yours become a stumbing block to them that are weak, 1 Cor 8:9. But when you sin so against the brethren, and wound their week conscience, ye sin against Christ, 1 Cor 8:12