He shall not be afraid of evil tidings: his heart is fixed, trusting in the LORD.
He shall not be afraid of evil tidings - because, whatever evil may befall, God can and will overrule it to good (Romans 8:28).
His heart is fixed - established fearlessly. So Moses, with the Red Sea before and the Egyptian foes behind (Exodus 14:13); Jehoshaphat before the Ammonite horde of invaders (2 Chronicles 20:12; 2 Chronicles 20:15; 2 Chronicles 20:17); Asa before Zerah, the Ethiopian's "thousand thousand and three hundred chariots" (2 Chronicles 14:9-12). Contrast with the persecuted David's fearless trust Saul's panic-stricken feeling at the Philistine invasion, insomuch that he repaired for help to a witch. How bold were the three youths in prospect of Nebuchadnezzar's fiery furnace! How fearless Stephen before the council! Basilius could say, in answer to the threats of Cesar Valens, 'such bug-bears should be set before children.' Athanasius said of Julian, his persecutor, 'He is a mist that will soon disappear.'