question regarding the first revelation

[H.]

in the first revelation gabriel told muhammad (saw) to "iqra", which means read/recite. We know muhammad was illiterate and he responded with, i dont know how to read 3 times this happened. Why did he tell muhammad saw to read, allah swt is all knowing why did he tell him to read. And when muhammad said he couldnt read, why did gabriel squeeze him? And why did he again ask him to read? Was the squeeze to make him able to read or something. Also why wasnt Muhammad saws reaction differently, you are in a cave and an angel comes, he doesnt say hello, he just says read, and then squeezes you? Ughh i am just confused can someone explain

jazakallah

[Dawud]

in the first revelation gabriel told muhammad (saw) to "iqra", which means read/recite. We know muhammad was illiterate and he responded with, i dont know how to read 3 times this happened. Why did he tell muhammad saw to read, allah swt is all knowing why did he tell him to read. And when muhammad said he couldnt read, why did gabriel squeeze him? And why did he again ask him to read? Was the squeeze to make him able to read or something. Also why wasnt Muhammad saws reaction differently, you are in a cave and an angel comes, he doesnt say hello, he just says read, and then squeezes you? Ughh i am just confused can someone explain

jazakallah

Why did he tell muhammad saw to read, allah swt is all knowing why did he tell him to read.

this is a prophecy from the bible, this event was foretold in bible

And when muhammad said he couldnt read, why did gabriel squeeze him?

to show him that this is no game nor joke, so take it seriously