2 Kings 19:6-7 and Isaiah 37:6-7 are parallel accounts where the prophet Isaiah reassures King Hezekiah that God will deliver Judah from the Assyrian threat.
In 2 Kings 19:15-19, Hezekiah prays to the Lord for deliverance from the Assyrians, which is also recorded in 2 Chronicles 32:20, highlighting the power of prayer and reliance on God.
2 Kings 19:35 describes the angel of the Lord striking down the Assyrian army, reminiscent of the angel of death in Exodus 12:29 during the Passover, demonstrating God's power to deliver His people.
2 Kings 19:22 and Isaiah 37:23 both address the blasphemy of the Assyrian king against the Holy One of Israel, emphasizing God's holiness and the seriousness of blasphemy.
2 Kings 19:34 speaks of God defending Jerusalem for His servant David's sake, connecting to the Davidic Covenant in 2 Samuel 7:12-16, where God promises to establish David's throne forever.