How do we know that God's sacrifice is the only acceptable one?

The account in 1 Kings 18 serves as a vivid example of the contrast between God’s true sacrifice and false sacrifices. When Elijah calls upon the Lord, fire descends from heaven to consume the sacrifice, evidencing God's acceptance and power. This is contrasted sharply with the futile efforts of the prophets of Baal, who, despite their fervent devotion, could not conjure a response from their false god. Ultimately, this foreshadows Christ’s sacrificial death, which was foreordained and perfectly executed to atone for the sins of His people, affirming that it is through Him alone that we find redemption.