"It's not about some blood sacrifice to magically save us from an impotent god who is powerlessly unable to forgive on his own." Good, good. Very noble. "A just God would not punish people for eternity for a white lie or even 'a lifetime of mistakes'." Very warm indeed. "A God who demands perfection is not a loving and just God." Popular feeling. "Jesus came teaching a way of Grace, not of rule following, not of blood sacrifices that the pagans relied upon, or to appease some angry deity." That just feels right. "A God who cannot forgive as we can forgive -- without some payment or payback or something -- is not a God at all." Noble sentiments, all. Except that they are in direct contradiction to what the Bible has to say.
Consider what the Bible says about blood.
Having now been justified by His blood, we shall be saved from the wrath of God through Him. (Rom 5:9)That seems to say ("seems" as in "states absolutely clearly and irrefutably") that Christ's blood was essential to our salvation.
Without shedding of blood there is no forgiveness. (Heb 9:22)
Brethren, since we have confidence to enter the holy place by the blood of Jesus. (Heb 10:19)
Jesus also, that He might sanctify the people through His own blood, suffered outside the gate. (Heb 13:12)
Consider what the Bible has to say about God's wrath.
For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness. (Rom 1:18)God's wrath isn't a guess. It isn't the product of narrow minds, tricked (like all of historic Christian orthodoxy) into some messed up view of God. It is plainly (and repeatedly) stated in Scripture. Indeed, we have the clear statement that God's will is to make His power and wrath known on "vessels of wrath prepared for destruction" (Rom 9:22).
Let no one deceive you with empty words, for because of these things the wrath of God comes upon the sons of disobedience. (Eph 5:6)
Therefore consider the members of your earthly body as dead to immorality, impurity, passion, evil desire, and greed, which amounts to idolatry. For it is because of these things that the wrath of God will come upon the sons of disobedience. (Col 3:5-6)
In Romans Paul writes a comprehensive explanation of the problem (Rom 1:18-3:18). It's sin (Rom 1:18)1. It's everywhere (Rom 3:23). It's fatal (Rom 6:23). Then he steps up to the good news (Rom 3:19-26). He speaks of our justification as a gift by God's grace "through the redemption which is in Christ Jesus whom God displayed publicly as a propitiation in His blood through faith." That word, "propitiation", isn't a friendly word. It refers to an angry God who requires appeasement. John says, "He Himself is the propitiation for our sins." (1 John 2:2) Clearly sin requires propitiation, the appeasement of an angry deity. This, the Bible says, was accomplished by Christ. How? "In His blood." Now, am I saying that God was some bloodthirsty deity requiring some messy sacrifice? No. Consider it from this direction. We speak of the "precious blood of Christ." How precious? Just how much blood was required? If Jesus had pricked His finger on a thorn, would that have been a sufficient quantity? No, of course not. The question isn't blood. The point is in the premise, "The life of the flesh is in the blood ... for it is the blood by reason of the life that makes atonement." (Lev 17:11) Not blood, but life. Since "the wages of sin is death" (Rom 6:23), the payment required is death. So Christ didn't die as an example or to teach us something or to show humility. "Christ died for our sins." (1 Cor 15:3)
The Bible says that all of us have sinned. The Bible says that sin earns us death. The Bible clearly claims that God's justice demands satisfaction. And the Bible is clear that Christ died for our sins, providing the satisfaction of divine justice, so that "He would be just and the justifier of the one who has faith in Jesus." (Rom 3:26)2 Now, noble sentiments might lead you to believe otherwise. But your noble sentiments would be wrong, a lie. And another thing the Bible is clear on is who the father of lies is. You can stick with your "warm feelings", your "improved understanding", your "higher version" and stand in direct opposition to all of Scripture as well as all of historic orthodox Christianity on this, or you can consider that we all suffer from wicked and deceitful hearts and if your feelings contradict God's Word, it is Man who is the liar, not God (Rom 3:4). So, go ahead. Substitute your feelings for God's stated truth. We'll let God sort that out.
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1 Note the infraction that incurs God's wrath. Suppression of truth. Not some "big sin". Not serial rape or mass murder or some such thing. This warrants wrath from God.
2 In this phrase, Paul makes Christ's death on our behalf a matter of justice satisfied, making God both just and justifier. If it wasn't about justice, the phrase is meaningless.
2 In this phrase, Paul makes Christ's death on our behalf a matter of justice satisfied, making God both just and justifier. If it wasn't about justice, the phrase is meaningless.