The Bible says as many as come to him he will not cast out, but he will give them the power to become the children of God (John 1:12).

Sin is the hindrance to reaching God

All human effort to get to him has failed

The Bible says if we confess our sins and ask for forgiveness, God is faithful and just

He will forgive our sins and cleanse us from all unrighteousness (1 John 1:8-9)