I have committed some serious sins. Will they all be forgiven?

        Let me state right here at the onset....... Yes they can and Will if you Believe and proclaim that Jesus is your Lord and savior, confess your sins to Him, be 'born again', and truly repent (turn away from them), then you are assured by God's word that you will be saved. This wonderful answer to the basic question of our existence is given in the book of John;

"For God so Loved the world, that He gave His only begotten Son, that whosoever shall believe in Him should not perish, but have  Eternal Life." John 3:16

It does not matter what the sin is, God can forgive and forget it for an eternity. Your exact "judgment" as far as what you will receive or not receive at the judgment day is between you and Him. No one on this earth can tell you exactly how that will all work out.

        All of our sins were forgiven when Christ died on the Cross. This was the reason for His coming. Man's sin had to be reckoned with. It took Jesus who was God incarnate that did this. It was Jesus' blood that was shed that washed away the sins of man. Once this was done, the new covenant was in place, and that meant (among other things) that believing in Jesus would bring forgiveness of all sins FOREVER!

        There are several verses in the scriptures that assure us of this. Some of them are listed below.

“Come now, let us settle the matter,” says the LORD. “Though your sins are like scarlet, they shall be as white as snow; though they are red as crimson, they shall be like wool. If you are willing and obedient, you will eat the good things of the land; but if you resist and rebel, you will be devoured by the sword.” For the mouth of the LORD has spoken. Is. 1:18-20

A very important  point in the above scripture; "but if you refuse and rebel, you shall be devoured by the sword." Another words, refuse to believe in Jesus and spend an eternity in Hell.

"Therefore, let it be known to you, brethren, that through this Man is preached to you the forgiveness of sins; and by Him  everyone who believes is justified from all things  from which you could not be justified by the law of Moses." Acts 13: 38-39

"If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us  from all unrighteousness". 1 John  1:9