Question: Who was greater – Isaac or Rebecca, and why?
Answer: Hi! It’s really not for me, or anyone, to judge who is greater. Only G-d knows the tests that people go through and how difficult they were. I can only stand in awe of such people who spend their entire lives in his service.
I will tell you a Midrash, which points out that the verses at the beginning of Parshas Toldos imply that Isaac’s prayer for children was answered before Rebecca’s. However, the Midrash also gives the reason – because Isaac had the merit of his father Abraham behind him as well.
Best wishes,
Michoel Reach