Contradiction with Exodus 20:3
While 1 Kings 18:20 involves all the children of Israel gathering for a showdown between Elijah and the prophets of Baal, Exodus 20:3 commands the worship of only one God, contradicting the participation in an event centered around idol worship.
Exodus 20:3: Thou shalt have no other gods before me.
Contradiction with Jeremiah 10:10-11
This contrasts with the collective participation in idol-centered events in 1 Kings 18:20, emphasizing that the gods who have not made the heavens and the earth shall perish, unlike the gathering to witness prophets of Baal.
Jeremiah 10:10-11: But the LORD [is] the true God, he [is] the living God, and an everlasting king: at his wrath the earth shall tremble, and the nations shall not be able to abide his indignation. [true...: Heb. God of truth] [living God: Heb. living Gods] [everlasting...: Heb. king of eternity]
Contradiction with Isaiah 44:9
Critiques the futility of idol makers, in contradiction to the purpose of the gathering of Israelites in 1 Kings 18:20, which involves witnessing a contest between Elijah and Baal’s prophets.
Isaiah 44:9: They that make a graven image [are] all of them vanity; and their delectable things shall not profit; and they [are] their own witnesses; they see not, nor know; that they may be ashamed. [delectable: Heb. desirable]
Contradiction with Deuteronomy 6:14
Instructs not to follow other gods, which contradicts Israel's involvement in the events of 1 Kings 18:20 that pertain to Baal worship.
Deuteronomy 6:14: Ye shall not go after other gods, of the gods of the people which [are] round about you;
Contradiction with Romans 1:25
Criticizes the exchange of the truth about God for a lie and worshiping created things rather than the Creator, contrasting with the gathering in 1 Kings 18:20 that revolves around idolatry.
Romans 1:25: Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen. [more: or, rather]