I have committed such great sins. Will God forgive me now?
The Bible says, “If we confess our sins, He [God] is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness.” Apostle John, 1 John 1:9
After you have dedicated yourself to following Jesus, when you confess your sins to God, God will forgive your sins and allow you to have fellowship with Him.
It is not necessary to confess your sins to any man or priest for forgiveness of sins. You don’t need a go-between to reach God’s ears. As mentioned before, there is only one mediator between God and man, and that is Jesus Christ.
The Bible says, “For there is one God and one mediator between God and men, the man Christ Jesus,” Apostle Paul, 1 Timothy 2:5
Because the Apostle Paul was very clear that there is only one go-between from God’s ear to us who pray, that rules out prayers to Mary and other saints.
Jesus said, “All things, whatever you ask in prayer, believing, you will receive.” Gospel According to Matthew, Matthew 21:22