Question:

If someone says that he/she is saved but knowingly continues to sin without asking for forgiveness can he/she go to heaven?

Answer:

If a person is truly saved, that person cannot be lost.  However, the question is worded, “If someone says that he/she is saved….”  1 John 3:9 says, “Whosoever is born of God does not commit [or practice] sin.”  We cannot know the heart of another person, but the person who is continuing in sin is not acting as if he/she were saved.  Matthew 7:20 says, “By their fruits you shall know them.”  James 2:14-26 talks about a man who says he has faith but exhibits no evidence of good works or is continuing in sin.  While, again, God knows our hearts, we have no right to count one as saved who gives no evidence of it in his/her life, and we should seek to warn and evangelize such a person.  Another relevant passage is Romans 6 which says that believers are counted by God as being “dead to sin” (verse 2) and therefore should not continue to live in sin (verses 11-14).