Parsha Vayeitzei Chapter 29 - Verse 32 - 34
Leah does a chesbon (an accounting). She knew that there would be 12 tribes/ 12 sons. She knew that Yaakov would have 4 wives & they would have 3 sons each. However, Leah did conceive 5 sons, Reuben, Simeon, Levi, Issachar, and Zebulun. Then she had a 6th son and then stopped. The Angel Gabriel took him up to Hashem and He named him Yehuda. In giving birth to Yehuda she got more than her share. She was overcome with gratitude. Jews are called Yehudim because our essence is to thank. Life is a gift and whatever we get it a gift.