Mat 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mat 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Jas 2:19 Thou believest that there is one God; thou doest well: the devils also believe, and tremble.
Jas 2:20 But wilt thou know, O vain man, that faith without works is dead?
Rom 3:28 Therefore we conclude that a man is justified by faith without the deeds of the law.
Rom 4:1 What shall we say then that Abraham our father, as pertaining to the flesh, hath found?
Rom 4:2 For if Abraham were justified by works, he hath whereof to glory; but not before God.
Rom 4:3 For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
Rom 4:4 Now to him that worketh is the reward not reckoned of grace, but of debt.
Rom 4:5 But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.
Rom 4:6 Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works,
Can i or anyone from any age in history say that they are without sin? All have sinned except Christ. The Blood of Jesus is the only blood that can save anyone from any age. Faith is the only means to access that perfect blood.
The same faith the only difference is that the people before Christ looked forward by faith and those after Christ look back by faith.
The shadows and ceremonial laws were given to help them look forward.