Salvation from our sins (Crimes against God):
No one can commit a crime against God. Who are we to offend the Creator of the universe? The only salvation from our sins is either not to commit them or repent and return to the obedience of God's Law. (Isa. 1:18,19)
Ro 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.(KJV)
Neither is the wage of sin death nor is the gift of God eternal life. One dies because he has been born and eternal life is an attribute that could not be shared with man. (Gen. 3:22,23)
You must place your faith in Jesus Christ to recieve salvation. It's not because of good works:
It depends on what salvation you are talking about. Universal salvation is free but for personal salvation we must obey the Law.
Ga 2:16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.
If we live by the Law, we are already justified; no further judgment. Now, Faith without the Law is as dead as a body without the breath of life. (James 2:26)
Eph 2:8 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.
If you read the greatest Psalm 119, you will be persuaded that the Law was given by the grace of God so that we could live in society and not in a jungle of disorder.
If we could do good deeds to go to heaven, then Jesus Christ wouldn't have had to die on the cross:
And the Prophets of the Lord would be vindicated in their words that no one can die for the sins of another. (Jer. 31:30; Ezek. 18:20)
Ga 2:21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
So, Jesus died in vain because righteousness does come by the Law.
The Bible says that we must believe that Jesus Christ died on the cross for our sins and that He rose from the dead and place our faith in Him for salvation:
Now, I can see why we "must" believe by faith, probably because Jesus did not die on the cross and most definitely he did not resurrect. (Isa. 26:14; II Sam. 12:23; II Sam. 14:14)
Ro 10:9 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.
That would be too easy to be saved. Jesus was a Jew whose Faith was Judaism and the Jewish Tanach does not endorse bodily resurrection. (Isa. 26:14; II Sam. 12:23; II Sam. 14:14)