Adam Clarke's Commentary on the Bible

Verse 13 (Isaiah 14:13)

I will ascend into heaven - I will get the empire of the whole world. I will exalt my throne above the stars of God - above the Israelites, who are here termed the stars of God. So the Targum of Jonathan, and R. D. Kimchi. This chapter speaks not of the ambition and fall of Satan, but of the pride, arrogance, and fall of Nebuchadnezzar.

The mount of the congregation "The mount of the Divine Presence" - It appears plainly from Exodus 25:22 , and Exodus 29:42 , Exodus 29:43 , where God appoints the place of meeting with Moses, and promises to meet with him before the ark to commune with him, and to speak unto him; and to meet the children of Israel at the door of the tabernacle; that the tabernacle, and afterwards the door of the tabernacle, and Mount Zion, (or Moriah, which is reckoned a part of Mount Zion), whereon it stood, was called the tabernacle, and the mount of convention or of appointment; not from the people's assembling there to perform the services of their religion, (which is what our translation expresses by calling it the tabernacle of the congregation), but because God appointed that for the place where he himself would meet with Moses, and commune with him, and would meet with the people. Therefore מועד הר har moed , the "mountain of the assembly," or מועד אהל ohel moed , the "tabernacle of the assembly," means the place appointed by God, where he would present himself; agreeably to which I have rendered it in this place, the mount of the Divine Presence.

- Adam Clarke's Commentary on the Bible