2 Kings 18:12
Because they obeyed not the voice of the LORD their God, but transgressed his covenant, and all that Moses the servant of the LORD commanded, and would not hear them, nor do them. Because they obeyed not the voice of the LORD their God, but transgressed his covenant, and all that Moses the servant of the LORD commanded, and would not hear them, nor do them.
The verse records the Assyrian capture of Samaria and the scattering of the shattered remnant of the ten tribes among the nations, an event belonging to the earlier portion of Hezekiah's reign. Israel was carried away out of their own land to Assyria because they did not obey the voice of the Lord their God but transgressed His covenant and all that Moses the servant of the Lord commanded, refusing to hear and to do them. The Assyrians who carried Israel away were instruments through which God carried out His purpose, so that the destruction of the northern kingdom came from God Himself.
That Assyrian success led many to question the power of the God of the Hebrews and emboldened the Ninevites, who had long since set aside the message of Jonah, in defiant opposition to the purposes of Heaven. A few years after the fall of Samaria the same victorious armies reappeared in Palestine against the fenced cities of Judah with some measure of success, then withdrew for a season because of difficulties in other portions of their realm. The final demonstration before the nations whether the gods of the heathen would prevail did not come until some years later, toward the close of Hezekiah's reign, when remarkable providences revealed that the God of Israel was with His people.