2 Chronicles 30:6

So the posts went with the letters from the king and his princes throughout all Israel and Judah, and according to the commandment of the king, saying, Ye children of Israel, turn again unto the LORD God of Abraham, Isaac, and Israel, and he will return to the remnant of you, that are escaped out of the hand of the kings of Assyria.

The posts, х haaraatsiym (H7323)] - runners, or royal messengers, who were taken from the king's bodyguard (2 Chronicles 23:1). Each, well mounted, had a certain number of miles to traverse, and, having performed his course, was relieved by another, who had to scour an equal extent of ground; so that, as the government messengers were despatched in all directions, public edicts were speedily diffused throughout the country. The proclamation of Hezekiah was followed by a verbal address from himself, piously urging the duty, and setting forth the advantages, of a return in a spirit of true penitence to the pure faith and institutions which God had delivered to their ancestors through Moses.

The remnant of you, that are escaped out of the hand of the kings of Assyria. This implies that several expeditions against Israel had already been made by Assyrian invaders: by Pul (2 Kings 15:19), but none of the people were then removed; at a later period by Tiglath-pileser, when it appears that numbers among the tribes east of Jordan (1 Chronicles 5:26), and afterward in the northern parts of Israel (2 Kings 15:20), were carried into foreign exile. The invasion of Salmaneser cannot be alluded to, as it did not take place until the sixth year of Hezekiah's reign (2 Kings 17:6; 2 Kings 18:9).