"All nations surround me; three times Gog and Magog are destined to come up to Jerusalem, as Sennacherib came up to the Land of Israel, and as Nebuchadnezzar came up to Jerusalem. The first time it says, 'All nations surround me,' for all the world will be gathered and brought up to Jerusalem, as it is said, 'And many nations shall come and say, Come, and let us go up to the mountain of the Lord, and to the house of the God of Jacob' (Micah 4:2).
The entire portion ends, 'And they are curtains,' therefore it is said in the name of the Lord, 'for I will be to them a wall of fire round about' (Zechariah 2:9). The second time it says, 'Surround me, they surround me,' for all the nations will feel it and be brought up to Jerusalem, as it is said, 'Why do the nations rage, and the peoples imagine a vain thing? The kings of the earth set themselves, and the rulers take counsel together, against the Lord, and against his anointed' (Psalms 2:1-2).
And they are curtains; therefore it is said in the name of the Lord, 'for I will be to them a wall of fire round about' a second time. The third time it says, 'Surround me like bees,' for they will spread models over all the lands, to proclaim the war. As it is said, 'Proclaim ye this among the nations: Prepare for war' (Joel 4:9). And the entire portion ends, 'And they are curtains'; therefore it is said in the name of the Lord, 'for I will be to them a wall of fire round about' a third time."...