It isn't a sin committed but a sin conceived in the mind, so it may have no immediate consequences. The law of Moses dealt only with sins committed and not the thoughts, and yet it was the thinking patterns that needed reform. This is why Jesus superseded the law by getting to the nub of the problem.
Will I go to heaven if I keep sinning?
The answer is if you practice sin, you WILL NOT go to heaven. You will go to hell to spend an eternity of torment away from God's presence and goodness and glory. John says if you belong to Satan you practice sin. If you're a child of God, then you practice righteousness.13 Jan 2019