Question: I read on your site that Noah was born circumcised. Can you tell me specifically in Torah where that is? 

Answer:  It isn’t explicitly in the text, but it can be found in the Midrash on Genisis 5:28 – 29 (the oral transmission explaining much of the Torah text. These transmissions were given to Moses at Sinai by G-d as a companion to the text, in order to properly explain the terse verbiage of the Torah). When G-d cursed Adam and the land, he explained that the curse would last till a child was born circumcised. When Lemech saw Noah born circumcised, he immediately knew relief was in sight, so he exclaimed, “This one will give us rest from our work and from the toil of our hands from the ground, which the Lord has cursed.”

All the Best,
Rabbi Meir Goldberg