Great post As for myself I don't feel we will wont to sin. I base this on how I feel after asking Christ to except me and forgive me.
I want to serve Him for his gift to me. I believe Father knows the Heart of us all you can't fool him. It's a great question thanks for posting this.
I agree. And my confidence in never falling away from Heaven will be based on what Christ has done and His keeping power. It will never be based on my ability to not sin. We will forever be 'in Christ'. Thus forever be with Him in Heaven. And, we have that same assurance now, for when you came to Christ, you were placed in Christ. And now your life is 'hid' in Christ. (Col. 3:3) "For ye are dead, and your life is hid with Christ in God."
Thus you have the assurance that you cannot lose your salvation.
Stranger