There's lots of videos like this it's not a misunderstanding of their own scripture.
https://www.chabad.org/library/bible_cdo/aid/8220/showrashi/true
This makes Isaac thirty-seven years old, and at that time, Rebecca was born. He waited for her until she would be fit for marital relations-three years-and then married her.
You said the beautiful history about the servant going to find a wife to Issac, I see nothing beautiful on that see how they treat everyone as wicked but only Abraham family as righteous, also maiden means a young virgin a servant more like a slave.
https://video.nostr.build/a7911c2c95f81dbfda4b3014d20167400fd4a57481c8ef6afeb246cd306f077c.mp4
What kind of sense does it make to marry a 3 year-old? Not even the Muslims, whose prophet married a 9 year-old, are that ridiculous!
To me this is a case of a stupid misinterpretation of the Scriptures.
Yes same picture both based on the same scripture 
https://video.nostr.build/61fe4bb69da33c486cf3b37be12fd214ee92216c715805ac0687105101237fd0.mp4
https://video.nostr.build/5ca96788df6e5476f423f3605c976383b5061f9788ff75ca5073a460d2e45054.mp4
From Zohar:
"Rebekah was three years old when Isaac took her; and he begat offspring when he was sixty years old, this being a ripe age for producing a child like Jacob."
https://cdn.satellite.earth/07affa9b1f8413bdb3ec4aab386dc46e1bbcd9d71226ab2b6738ba97d01e04b3.mp4
I am just dumbfounded that there are actually Jews who interpret the scripture this way. I'm sure not all do. This is just ridiculous.
Now I will admit that I have sometimes found it odd that Isaac waited until he was 40 years old to get married. But even today we have movies like "40 Year Old Virgin". I do think that things were different back then because people lived so much longer, with Isaac living to be 185 years old himself, for example. So you could probably take your time to find the right woman! I've also wondered before if his going blind had something to do with his waiting for so long to get married 👀.
