JM2C
CHRISTIAN
”one of one” is “only/yachid” like an “only/yachid son of Abraham” and “one of twenty” is “one/echad” like “We are all one man's sons” –Gen 42:11.No, the text is referring to a single mountain It says "one of the mountains." That makes the mountain it refers to "one" and the rest, "of the mountains." This does not make the "one" any different from any other notion of "one" whether there were 2 other mountains or a million. The question is the meaning of "one" not the existence of anything else. You seem to lose sight of that.
One of one and one of twenty are both "one."
The reason why God chose the word “only/yachid” in contrast with the word “one/echad” is because the promise is through Isaac and not through Ishmael.
What if the verse says something like this instead: “Take one/echad of your sons –see Gen 42:11” [either Isaac or Ishmael, although Ishmael is gone already] “whom you love, and go to the region of Moriah. Sacrifice him as a burnt offering on top of the only/yachid mountain in that land.”
If that is the case, then we would have more controversies about who did Abraham actually brought into the land of Moriah. The Muslim would say, Abraham brought Ishmael and not Isaac.
But God gave Abraham specific instructions by using the words “only/yachid” and “one/echad”. God specifically commanded Abraham to take Isaac as the “only/yachid” son, and take him to one/echad of the mountains in the land of Moriah.
Abraham could have gone to any part of those mountains, but God said specifically which one/echad of the mountains “which I will tell thee of” He will send Abraham to sacrifice his only/yachid son.