We are saved by grace -
(Ephesians 2: 8-9 KJV)
8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
9 Not of works, lest any man should boast.
We are all Sinner in some way or the other. We are sinners by life. Our Sin separates us from GOD. God is Holy and we can only attain fellowship in his presence by accepting Jesus as our Lord and personal Savior because it is only through Jesus that we can come to the father in prayer.
Our Sins must be washed away and this is possible by the blood of JESUS.
(John 3:3 KJV) Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God.
We can only be born again by confessing our sins and accepting Jesus into our life. When we become born again christians our life will be renewed. And we will be living according to His Word and Will.
(Romans 10:9-11 KJV)
9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
11 For the scripture saith, Whosoever believeth on him shall not be ashamed.