Is there any verse in the bible where Jesus says I am going to pay for your sins ?

This was asked my a Muslim.
Jesus said the following
"Obey the Commandments" (Matthew 19:17)
Why would he say that if he knows already he is going to pay for our sins ..what is the use of following the commandments then ?!! because whether you followed it or not you are already forgiven ?!!!

where is it in the bible that Jesus says I will pay for your sins?




My answer:

Isaiah 53:4 - Surely He has borne our griefs (sicknesses, weaknesses, and distresses) and carried our sorrows and pains [of punishment], yet we [ignorantly] considered Him stricken, smitten, and afflicted by God [as if with leprosy].(B)
5But He was wounded for our transgressions, He was bruised for our guilt and iniquities; the chastisement [needful to obtain] peace and well-being for us was upon Him, and with the stripes [that wounded] Him we are healed and made whole.
This is one of the Jewish Old Testament prophets 600 years before Jesus came prophesying of why the Messiah would die.
Luke 24: 27 - Then beginning with Moses and [throughout] all the Prophets, He went on explaining and interpreting to them in all the Scriptures the things concerning and referring to Himself...44Then He said to them, This is what I told you while I was still with you: everything which is written concerning Me in the Law of Moses and the Prophets and the Psalms must be fulfilled. 45Then He [thoroughly] opened up their minds to understand the Scriptures, 46 And said to them, Thus it is written that the Christ (the Messiah) should suffer and on the third day rise from ([l]among) the dead,(B) 47 And that repentance [with a view to and as the condition of] forgiveness of sins should be preached in His name to all nations, beginning from Jerusalem. 48 You are witnesses of these things.
Those are the words of Jesus Himself to His disciples. Now let's see what His Apostles says. Paul, who persecuted and killed Christians before his conversion when met Christ; states this:
1 Corinthians 15:1 - AND NOW let me remind you [since it seems to have escaped you], brethren, of the Gospel (the glad tidings of salvation) which I proclaimed to you, which you welcomed and accepted and upon which your faith rests,
2 And by which you are saved, if you hold fast and keep firmly what I preached to you, unless you believed at first without effect and all for nothing. 3 For I passed on to you first of all what I also had received, that Christ (the Messiah, the Anointed One) died for our sins in accordance with [what] the Scriptures [foretold],(A) 4 That He was buried, that He arose on the third day as the Scriptures foretold,(B)

It's amazing how the bible has such a continuity.