The New Testament explains to us that there is only one acceptable sacrifice, and that is Jesus Christ. There is no record in the bible of anyone being saved because a sinful man sacrificed for them...
God put Job through the ringer because that is what it took for Job to realize the error of his way.
You're right about one thing, and it's the one thing nobody in this conversation is contesting: Jesus Christ's blood is the only sacrifice that pays the price of redemption. "Ye were not redeemed with corruptible things, as silver and gold... But with the precious blood of Christ, as of a lamb without blemish and without spot" (1 Peter 1:18-19). "Nor yet that he should offer himself often... but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself" (Hebrews 9:25-26). Nobody is claiming Job's sacrifice atoned for sin in the eternal, once-for-all sense. That's not the argument, and knocking it down doesn't touch the actual claim: that all believers function as priests under Christ our High Priest, and that this priestly function - not atoning, but interceding - is what we see in Job from the very first chapter.
START WITH THE PRIESTHOOD OF ALL BELIEVERS
Peter tells the church: "Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ" (1 Peter 2:5). And again: "Ye are a chosen generation, a royal priesthood, an holy nation" (1 Peter 2:9). John writes that Christ "hath made us kings and priests unto God and his Father" (Revelation 1:6), and again, "hast made us unto our God kings and priests: and we shall reign on the earth" (Revelation 5:10). This is not a metaphor reserved for clergy. Every believer is a priest. And over all of us stands one High Priest: "Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God... Let us therefore come boldly unto the throne of grace" (Hebrews 4:14, 16). "Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them" (Hebrews 7:25).
So the New Testament pattern is not complicated: Christ alone atones. Every believer intercedes. Those are two different functions, and collapsing them into one is exactly the mistake your rebuttal makes when it treats "Job prayed for his friends" as a claim about redemption's price.
MELCHIZEDEK, NOT LEVI - AND JOB PREDATES MOSES
Here is the point that your Passover argument runs straight into: "There is no record in the bible of anyone being saved because a sinful man sacrificed for them... God does not tell us that Job is a son. Job tells us that he is a hired servant. The bible tells us that hired servants cannot partake of the Passover Lamb... Only if you become a bondservant can you partake of the Passover Lamb."
This argument imports a Mosaic ceremonial law - Exodus 12:45, that a hired servant shall not eat the Passover - and applies it backward onto a man who lived centuries before Moses, before Sinai, before the Passover existed as an institution at all. That's not just an anachronism, it's the exact error the book of Hebrews spends three chapters correcting. Hebrews doesn't measure Melchizedek by Levitical law; it argues the reverse - that Levi himself, "who receiveth tithes, payed tithes" through Abraham to Melchizedek, because Melchizedek's order is older and greater (Hebrews 7:9-10). "For it is evident that our Lord sprang out of Judah; of which tribe Moses spake nothing concerning priesthood" (Hebrews 7:14). Christ's own priesthood is validated by explicitly NOT being measured against the law of a carnal commandment: "For the priesthood being changed, there is made of necessity a change also of the law" (Hebrews 7:12), and Christ is priest "not after the law of a carnal commandment, but after the power of an endless life" (Hebrews 7:16).
If Job's status as priest cannot be judged by a law that didn't exist yet, then the Passover exclusion clause disqualifies nothing. It's a rule from a covenant Job was never under, applied to void a priesthood that predates and outranks that covenant. Job is not a Levitical hired servant failing a Mosaic test. He is a Melchizedekian priest-king, in the company of Melchizedek and Jethro, operating under a wholly different order - exactly the order Hebrews 7 says is greater.
JOB 1:5 TO JOB 42:8 - THE FULL ARC
This is the piece the rebuttal skips entirely, and it's decisive. Job's priestly intercession isn't a reaction to his suffering - it's the very first thing we learn about him, before a single calamity occurs: "And it was so, when the days of their feasting were gone about, that Job sent and sanctified them, and rose up early in the morning, and offered burnt offerings according to the number of them all: for Job said, It may be that my sons have sinned, and cursed God in their hearts. Thus did Job continually" (Job 1:5).
Before the fire falls, before the Sabeans, before the boils, before Satan is ever given permission to touch him - Job is already standing as intercessor for people who are not himself, on the basis of sin he cannot even confirm, "continually." That is the priestly office in its plainest form: mediating for others out of love and reverence, not certainty of their guilt. The book does not introduce this as incidental color. It's the frame the whole story sits inside.
And the book closes by returning to exactly that frame: "My servant Job shall pray for you: for him will I accept: lest I deal with you after your folly, ye have not spoken of me the thing that is right, like my servant Job" (Job 42:8). The claim that "God accepted the three friends because they brought the offering" reverses what the verse says. The offering is commanded, but acceptance is explicitly conditioned on Job's intercession: God will deal with the friends "after their folly" unless Job prays for them. The offering doesn't work on its own. Job's mediation is what stands between the friends and judgment. That is Job 1:5's pattern, completed. The book begins with Job interceding for his own household and ends with Job interceding for outsiders who mocked him - the priestly office widening, not weakening, across the narrative arc.
JAMES 5:20 - THIS IS THE NEW TESTAMENT MINISTRY
"James 5:20 does not say you can save someone because of your righteousness... We water and God gives the increase" - agreed, and that is precisely the point, not a rebuttal of it. James writes: "Let him know, that he which converteth the sinner from the error of his way shall save a soul from death, and shall hide a multitude of sins" (James 5:20). The convert-er doesn't atone. He doesn't pay for sin. He is the instrument through whom God, by His own righteousness, saves. That is a priestly, intercessory function performed by an ordinary believer - not Christ, not a Levite, just "a brother" (v.19) - and James calls the result "saving a soul from death." That is the New Testament's own language for exactly the kind of ministry Job performs for his sons in Job 1:5 and for his friends in Job 42:8: standing in the gap so that others don't bear the full weight of what they've done. Paul frames the same function corporately: "God... hath given to us the ministry of reconciliation... we pray you in Christ's stead, be ye reconciled to God" (2 Corinthians 5:18, 20). And again: "Brethren, if a man be overtaken in a fault, ye which are spiritual, restore such an one... Bear ye one another's burdens, and so fulfill the law of Christ" (Galatians 6:1-2).
PHILEMON - PAUL'S MINISTRY MADE CONCRETE
Paul doesn't just teach this pattern; he enacts it. Writing to Philemon about the runaway slave Onesimus, Paul says: "If he hath wronged thee, or oweth thee ought, put that on mine account; I Paul have written it with mine own hand, I will repay it" (Philemon 1:18-19). Paul is not claiming to atone for Onesimus's sin before God - he is standing between a wronged man and a debtor, offering to personally absorb the cost so reconciliation can happen. That is priestly intercession modeled on Christ, in miniature, by a man who knew better than anyone that only Christ's blood pays the actual, eternal debt. It didn't stop Paul from interceding anyway - because interceding is the believer's calling, not a rival to Christ's finished work.
THE DISTINCTION THAT MATTERS
The whole objection rests on a category error: treating priestly intercession as a claim to atone. It isn't. Christ atones - once, sufficiently, finally: "By one offering he hath perfected for ever them that are sanctified" (Hebrews 10:14). Believers intercede - continually, imperfectly, under Him, exactly as Job did for his sons before disaster ever touched him, and for his friends after the whirlwind had spoken. "Job's problem was that he had not submitted to God's righteousness" doesn't square with a man God Himself calls "blameless" to Satan (Job 1:8) and whom God commands the friends to seek out for intercession specifically because Job "spoken of me the thing that is right" (Job 42:7-8). Job's rebuke in chapters 38-41 is about the limits of his understanding, not the sincerity of his righteousness or the validity of his priestly office - and the text settles the matter by having God restore him and use him as mediator in the very next verses.