This is the first distinct mention which we find in Scripture of Assyria as an aggressive power. From the native monuments we learn that she had been for above a century pushing her conquests beyond the Euphrates, and seeking to reduce under her dominion the entire tract between that river and Egypt. Jehu had paid tribute. Some - arguing from the use of the phrase “confirmed the kingdom” (here, and in 2 Kings 14:5) - think that Jehoahaz had acknowledged Assyrian suzerainty, and consented that her monarchs should receive their investiture from the hands of the Ninevite king. But hitherto there had been no hostile invasion of Jewish or Israelite soil by an Assyrian army. Now, however, the Assyrians are at last formally introduced into the history. A series of aggressions is related in this and the four following chapters, culminating, on the one hand, in the destruction of the northern kingdom, on the other, in the complete failure of Sennacherib’s attempt upon Judaea and Egypt.
With respect to the present expedition, there are certain difficulties. The name of Pul does not appear among the Assyrian monumental kings, and it is absent from the copies of the Assyrian Canon, containing the entire list of monarchs from about 910 B.C. to 670 B.C. Assyria Proper, moreover, appears to have been in a state of depression for some 40 years before the accession of Tiglath-Pileser 2 Kings 15:29. It is probable that, during the depression of the Ninevite line, Pul, a Chaldaean and not an Assyrian king, established a second monarchy upon the Euphrates, which claimed to be the true Assyria, and was recognized as such by the nations of Syria and Palestine. His invasion was probably provoked by Menahem’s conquest of Thapsacus, which he would view as a wanton aggression upon his territory.
A thousand talents of silver - Compared with the tribute of Hezekiah soon afterward 2 Kings 18:14, this seems a large sum; but it is not beyond the resources of such a State as Samaria at the period. The tie which had bound Samaria to Assyria from the reign of Jehu to that of Jeroboam II, had ceased to exist during the period of Assyrian depression. Menahem now renewed it, undertaking the duties of a tributary, and expecting the support which Assyria was accustomed to lend to her dependencies in their struggles with their neighbors. Hence, the reproaches of Hosea (marginal reference “n”).