If a man sins against another man, God can intercede for him; but if a man sins against the LORD, who can intercede for him?” But they would not listen to their father, since the LORD intended to put them to death. — 1 Samuel 2:25

When you've sinned against God, who can plead for you? That's the crushing question of . But the whole New Testament answers: Jesus Christ the righteous. He's our Advocate with the Father, the propitiation for our sins, so that God remains just while justifying the ungodly. There's no other mediator, but He's enough —He found a ransom, and who can condemn when God Himself justifies.