Isaiah 38:6

This is the only verse which would lead us to suppose that the events synchronised with Sennacherib's invasion; but its genuineness is doubtful. An unqualified assurance of deliverance is hardly consistent with the prophet's attitude to the king's policy at the time supposed. Hezekiah was deeply committed to projects of rebellion in the first years of Sennacherib's reign, and a political message from Isaiah in those circumstances could hardly fail to be accompanied by a warning against the tendency which prevailed at the court. Since the verse breaks the connexion between Isaiah 38:5; Isaiah 38:7, and since the latter part is a reproduction (in 2 Kings an exact reproduction) of ch. Isaiah 37:35, there are some grounds for supposing that it has been inserted by the compiler of the books of Kings.