All nations face big decision, but the decision Israel faced was bigger even than the Referendum.
God does not let people hedge their bets, you either serve God or you do not. Worship of God and Baal are mutually incompatible.
Does God have rivals in our hearts? You cannot serve both God and Money. What do we depend on for our security?
The people of Elijah's time were convinced by God burning up the sacrifices that God is the Lord. What does it take to convince us? We have eyewitness accounts of the Resurrection.
The execution of the prophets was carried out because of the seriousness of them leading the people away.