Sin is the transgressing of Gods laws, but praise Him for the sending of our Lord and Saviour Jesus Christ who sets us free from sin! (1 Corinthians 15:56-58) The sting of death is sin; and the strength of sin is the law. But thanks be to God, which giveth us the victory through our Lord Jesus Christ. Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord…. (John 3:4).
Sin has power over a person as long as they continue to be a servant of it. It is a sacrifice we make for the good of Gods way as we turn away from what is not pleasing in His eyes. Once we learn the truth we should no longer willfully sin. (Hebrews 10:26-29). For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins, But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries. He that despised Moses’ law died without mercy under two or three witnesses:Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?
Jesus many times after healing people would say go and sin no more, but in the book of John we hear Him say something more than “Go and sin no more” to the man by the pool of Bethesda which had been sick thirty eight years. (John 5:5,8,9,14). And a certain man was there, which had an infirmity thirty and eight years. Jesus saith unto him, Rise, take up thy bed, and walk. And immediately the man was made whole, and took up his bed, and walked: and on the same day was the sabbath. Afterward Jesus findeth him in the temple, and said unto him, Behold, thou art made whole: sin no more, lest a worse thing come unto thee.
God makes it clear when talking to Cain that to do well is best, but if one does not do well then sin lieth at the door, and so two acts of sin were committed when Cain slew Abel. One was to murder him and the other was that he chose to lie to God when asked where his brother was? (Genesis 4:6-11). And the Lord said unto Cain, Why art thou wroth? and why is thy countenance fallen? If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee shall be his desire, and thou shalt rule over him. And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him. And the Lord said unto Cain, Where is Abel thy brother? And he said, I know not: Am I my brother’s keeper? And he said, What hast thou done? the voice of thy brother’s blood crieth unto me from the ground. And now art thou cursed from the earth, which hath opened her mouth to receive thy brother’s blood from thy hand.