“Now Ahaziah had fallen through the lattice of his upper room in Samaria and injured himself. So he sent messengers, saying to them, “Go and consult Baal-Zebub, the god of Ekron, to see if I will recover from this injury.” But the angel of the LORD said to Elijah the Tishbite, “Go up and meet the messengers of the king of Samaria and ask them, ‘Is it because there is no God in Israel that you are going off to consult Baal-Zebub, the god of Ekron?’ Therefore this is what the LORD says: ‘You will not leave the bed you are lying on. You will certainly die!’ ” So Elijah went. When the messengers returned to the king, he asked them, “Why have you come back?” ”
“A man came to meet us,” they replied. “And he said to us, ‘Go back to the king who sent you…” (2 Kings 1:2-6)
Think about the men sent out from the king to inquire about his health. They meet a complete stranger on the road who tells them to go back to their king and tell him he is going to die. Without even getting the name of the stranger they obey his words. Either these messengers are stupid or they know truth when they hear it. Since you have to believe their very lives are at stake it must be a case of good hearing. There is a tuning fork within each person which resonates when struck by Truth.