Acts? Faith? Works? Knowledge? What "gets you in to heaven?
When works are spoke of in the Bible, they are seen as evidence of faith. Not faith itself. We are saved by grace, and not works. However, I believe that we, as humans, have the capacity to accept or reject the gift of grace. When you accept it, you are saved. You try to do right, NOT so that you will go to heaven, but BECAUSE you are going to heaven. After you have been saved, you can then take the gift you have, and reject it. You do this in your heart, and it is shown in your works.
If you love Jesus, truly and honestly love him, then you will do what he commands. Not to prove you love, but as a natural thing. You will fall and fail, but Jesus is there to pick you up if you love and accept him. So, if you are saved, but continue in a sinful lifestyle, then you have rejected his gift, and his love, in your heart and it is evidenced in your actions.
On the other hand, everyone is a sinner. I mess up daily in my walk with God. But I love Him, and am trying to do what is right. If I was continuing in a sin without trying, then I would not have my salvation taken from me, I would be rejecting it in my heart, and it would be evidenced in my actions.
The big problem here is that this is all in the heart. THAT is why humans can’t judge one-another to heaven or hell. We don’t know someone’s heart, just their actions. God know there heart. Only God and the person truly know if that person is trying, and has not rejected the gift they once accepted.
/*phew that was harder than I thought…

“7But all these things that might have helped me, I call them all nothing, because of Christ. 8Yes, I call them all nothing, because to know Christ Jesus my Lord is much better. It is for his sake that I have given them all up and call them just dirt.”
Phil. 3:6-8