Isa 17:1  An oracle concerning Damascus. Behold, Damascus will cease to be a city and will become a heap of ruins.

Isa 17:3  The fortress will disappear from Ephraim, and the kingdom from Damascus; and the remnant of Syria will be like the glory of the children of Israel, declares the LORD of hosts.

Tiglath-Pileser, king of Assyria (and the slaughter of Rezin) swept away Damascus from being a city

Verse 3 has been historically fulfilled. This is the context of Damascus’s fall. Now are we to believe a double fulfillment? That would entail verse 3 being fulfilled all over again which evidently is not on the agenda as we are in the days of Israel’s restoration. Why are we looking for a double fulfillment of this prophecy? Someone’s been paying too much attention to a certain Mr Mchyde, me thinks. Since Damascus became a ruined political system permanently over 2,500 years ago, the prophecy cannot have a double fulfillment because that would entail Damascus becoming a great political power again which breaks the prophecy’s first fulfillment ie; it would be mutilated/ruined forever politically.

You can’t have your cake and eat it, as we say in the UK.