베레시트 (창세기) 29:32

ותקרא שמו ראובן AND SHE CALLED HIS NAME REUBEN — Our Rabbis explained it thus: she said, “See (ראו) the difference between (בין) my son and my father-in-law’s son who himself sold the birthright to Jacob and yet wished to kill him afterwards. This (my son) did not sell it (his birthright) to Joseph (it must be remembered that Joseph being the founder of two tribes was regarded as the first-born of Jacob’s sons since the eldest son took a double portion in the father’s property), yet he did not raise any protest to him being regarded as the first-born and not only did he not raise a protest but he even wished to take him out of the pit and so rescue him from death (Berakhot 7b).

וַתַּ֤הַר לֵאָה֙ וַתֵּ֣לֶד בֵּ֔ן וַתִּקְרָ֥א שְׁמ֖וֹ רְאוּבֵ֑ן כִּ֣י אָֽמְרָ֗ה כִּֽי־רָאָ֤ה יְהֹוָה֙ בְּעׇנְיִ֔י כִּ֥י עַתָּ֖ה יֶאֱהָבַ֥נִי אִישִֽׁי׃

And Le᾽a conceived, and bore a son, and she called his name Re᾽uven: for she said, Surely the Lord has looked upon my affliction; now therefore my husband will love me.