Romans 6:1 Shall we continue in sin that Grace may abound? GOD FORBID!!!!!!! Willfully sinning is direct disobedience to God. Hebrews 3:7-14 "Wherefore I(as the Holy Ghost saith, To day if you will hear his voice, harden not your hearts, as in the provication, in the day of temptation in the wilderness:when your fathers tempted me, proved me, and saw my works forty years. wherefore I was grieved with that generation, and said they do always err in their heart; and they have not known my ways. So I sware in my wrath, they shall not enter my rest.) Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God. But exort one another daily, while it is called to day; lest any of you be hardened through the decietfulness of sin. VS 14 - FOR WE ARE MADE PARTAKERS OF CHRIST :IF WE HOLD THE BEGINNING OF OUR CONFIDENCE STEDFAST UNTO THE END"You see if you sin the Holy Spirit convicts you If so be that the Spirit of God is in you. But if you do not repent in your HEART and continue in the sin there is a layer and layer of hardness that comes into the heart which eventually will cause you to turn from the lord.JAmes 5:19-20 indicates that the man who errs from the truth is in the same condition as the sinner and in danger of hells fire. you see psalm 25:14 says that you first must fear the lord before you become a partaker of the covenant promises. "The fear of the LOrd is to hate evil...." Proverb 8:13 Sin is evil. IF you do not hate your sin and Judge yourself you will be judged by the Holy JUst God. If you do not hate your sin you are not in agreement with God unless two be agreed they cannot walk together.We have been called to Holyness to reflect the Glory and Holiness of God.The Gospel message is that Christ Died and rose again.Therefore repent( change your mind and believe the word of God) for the remission of your sins (remission like cancer remits with treatment) and you will recieve the Holy Spirit.When you recieve the new spirit and the heart of flesh you cannot continue in sin (Ezek 36).If you think you can continue in sin I question your salvation. Jesus said if you love me you will obey me. HE who has no problem continueing in sin has not had the revelation of Christs love or his own wickedness.the word says that our hearts are decietfull AND DESPERATELY WICKED. REpent (change your mind and believe God) if this person thinks it is ok to keep sinning they are in unbelief which is the unpardonable sin. They are in serious danger.As the word says "MY PEOPLE parish for lack of knowledge" You have to seek God to find him. The truth is that GOd is still Holy and our flesh is still wicked GOD commands us be Holy as I am Holy. This person neither has seen God or known God. So deal with them as you would a person who is not saved. ( In other words preach the gospel to them, the cross, by the Holy Spirit. plant seeds, water, let God bring the Gain. That is my humble opinion. But I am just a young Christian. I have no wisdom of my own.