This is one of those passages where we shake our heads and go, “I don’t know”. However, all the answers are in old theology books. There is nothing new under the sun. There is always some old, dusty book from ages past that has the answer.
Psa. 120:
A Song of Ascents.
1 In my distress I cry to the LORD, that he may answer me:
2 “Deliver me, O LORD, from lying lips, from a deceitful tongue.”
3 What shall be given to you? And what more shall be done to you, you deceitful tongue?
4 A warrior’s sharp arrows, with glowing coals of the broom tree!
5 Woe is me, that I sojourn in Meshech, that I dwell among the tents of Kedar!
6 Too long have I had my dwelling among those who hate peace.
7 I am for peace; but when I speak, they are for war!
So where was or is Meshech and what or who are the tents of Kedar?
Meshech
Meshech is one of the sons of Japheth from whom the Europeans descended [Gen 10:2]. And it never has been a good place for the children of Israel to be in their wanderings. The Crusades, The INQUISITION, the pogroms, and constant evictions followed them everywhere they wandered. Jews could be buried on English soil until Oliver Cromwell changed the law in 1699.
Kedar
Kedar was a son of Ishmael [Gen 25:13]. The question is why, of all the sons of Ishmael, this one and notone of the other eleven?
Mohammed is said to be of the clan of Koresh, which descended from Kedar. As the Rambam put it, “for the Madman and imbecile is of the lineage of the children of Kedar as they readily admit.” Maimonides, “Letter to Yemen” 1:4. The Rambam wrote in Hebrew so the word translated as “Madman” would have been “Meshugana”.https://openingtheseals.com/wp-content/uploads/2017/03/Maimonides-2.jpg

Maimonides saw that this was a prophecy about the subjugation of the Jews to the Arabs because of the teaching of the Meshugana one. That this was because of the Jews’ sin, and there was nothing to do but endure.
Remember, my co-religionists, that on account of the vast number of our sins, God has hurled us in the midst of this people, the Arabs, who have persecuted us severely, and passed baneful and discriminatory legislation against us, as Scripture has forewarned us, “Our enemies themselves shall judge us” (Deuteronomy 32:31). “Letter to Yemen” 1:4
Muslim sight Mohammed in the Bible

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