And saw an altar - Rather, "The altar," i. e. an Assyrian altar, and connected with that formal recognition of the Assyrian deities which the Ninevite monarchs appear to have required of all the nations whom they received into their empire.

The fashion of the altar - Assyrian altars were not very elaborate, but they were very different from the Jewish. They were comparatively small, and scarcely suited for "whole burnt-offerings." One type was square, about half the height of a man, and ornamented round the top with a sort of battlement. Another had a triangular base and a circular top consisting of a single flat stone. A third was a sort of portable stand, narrow, and about the height of a man. This last was of the kind which the kings took with them in their expeditions.

Ahaz went to Damascus - He had received so much help on the defeat of Rezin, that he went to Damascus to meet the king of Assyria, and render him thanks.

Ahaz sent to Urijah the priest the fashion of the altar - This was some idolatrous altar, the shape and workmanship of which pleased Ahaz so well that he determined to have one like it at Jerusalem. For this he had no Divine authority, and the compliance of Urijah was both mean and sinful. That Ahaz did this for an idolatrous purpose, is evident from 2 Chronicles 28:21-25 : "For he sacrificed to the gods of Damascus; - and he said, Because the gods of the kings of Syria help them, I will sacrifice to them, that they may help me. And he made high places to burn incense to other gods in every city of Judah."

And King Ahaz went to Damascus to meet Tiglathpileser king of Assyria,.... When he heard he was come thither, and had taken it, to congratulate him on the victory, and to give him thanks for his assistance; which place from Jerusalem was one hundred and sixty miles, according to Bunting (q).

and saw an altar that was at Damascus; where, in all probability, he attended at the sacrifice on it along with the king of Assyria:

and King Ahaz sent to Urijah the priest the fashion of the altar, and the pattern of it, according to all the workmanship thereof; not only the size and form of it, but all the decorations and figures on it, with which it was wrought. This Urijah was very probably the high priest, for it can scarcely be thought that Ahaz would write to any other, or that any other priest would or could have complied with his request; and he seems to be the same Isaiah took to be a witness in a certain affair, though he now degenerated from the character he gives of him, Isaiah 8:2.

(q) Travels, &c. p. 185.

Ahaz paid Tiglath-pileser a visit in Damascus, "to present to him his thanks and congratulations, and possibly also to prevent a visit from Tiglath-pileser to himself, which would not have been very welcome" (Thenius). The form דּוּמשׂק is neither to be altered into דּמּשׂק nor regarded as a copyist's error for דּרמשׂק, as we have several words in this chapter that are formed with dull Syriac u-sound. The visit of Ahaz to Damascus is simply mentioned on account of what follows, namely, that Ahaz saw an altar there, which pleased him so much that he sent a picture and model of it "according to all the workmanship thereof," i.e., its style of architecture, to Urijah the priest (see Isaiah 8:2), and had an altar made like it for the temple, upon which, on his return to Jerusalem, he ordered all the burnt-offerings, meat-offerings, and drink-offerings to be presented. The allusion here is to the offerings which he commanded to be presented for his prosperous return to Jerusalem.

And king Ahaz went to Damascus to meet Tiglathpileser king of Assyria, and saw an altar that was at Damascus: and king Ahaz sent to Urijah the priest the fashion of the altar, and the pattern of it, according to all the workmanship thereof.

Damascus: Heb. Dammesek

10-16. And king Ahaz went to Damascus to meet Tiglath-pileser-This was a visit of respect, and perhaps of gratitude. During his stay in that heathen city, Ahaz saw an altar with which he was greatly captivated. Forthwith a sketch of it was transmitted to Jerusalem, with orders to Urijah the priest to get one constructed according to the Damascus model, and let this new altar supersede the old one in the temple. Urijah, with culpable complaisance, acted according to his instructions (2Ki 16:16). The sin in this affair consisted in meddling with, and improving according to human taste and fancy, the altars of the temple, the patterns of which had been furnished by divine authority (Ex 25:40; 26:30; 27:1; 1Ch 28:19). Urijah was one of the witnesses taken by Isaiah to bear his prediction against Syria and Israel (Isa 8:2).

16:10-16 God's altar had hitherto been kept in its place, and in use; but Ahaz put another in the room of it. The natural regard of the mind of man to some sort of religion, is not easily extinguished; but except it be regulated by the word, and by the Spirit of God, it produces absurd superstitions, or detestable idolatries. Or, at best, it quiets the sinner's conscience with unmeaning ceremonies. Infidels have often been remarkable for believing ridiculous falsehoods.