"Knowing this, that our old man [our old sinful self] is crucified with him [Jesus], that the body of sin might be destroyed, that henceforth we should not serve sin." - Romans 6:6 KJV 

"Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection:" - Romans 6:3-5 KJV 

We kill sin in our life by repentance, getting water baptized in Jesus name to bury our sins, and receiving the gift of God’s Spirit, the Holy Ghost. 

"Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost." - Acts 2:38 KJV 

By God’s Spirit in us we have His power to resist sin. We can become a witness to others of our changed life through Christ and can share the salvation message of Acts 2:38. 

"But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth." - Acts 1:8 KJV 

"I can do all things through Christ which strengtheneth me." - Philippians 4:13 KJV