1- It is as if he brings the flood to the world (Talmud Niddah 13)

2- As if he spills blood (Talmud Niddah 13)

3- As if he serves idols (Talmud Niddah 13)

4- He is liable to the death penalty (Talmud Niddah 13)

5- He is considered to have a major impairment (Talmud Niddah 13)

6- He is considered as being under an excommunication ban (Niddah 13)

7- He has no portion in the World to Come (Massechet Kala)

8- He has no portion in the G-d of Israel (The holy Zohar Noach)

9- The Holy One Blessed be He is more jealous for this sin than for any other (The holy Zohar Noach)

10- All troubles that befall a person are caused by this sin (Tikkune Zohar 57)

11- His holy soul goes to waste (The holy Zohar, Lech Lecha)

12- He can never leave Gehinomm (The holy Zohar Vayakhel)

13- He is given to the hands of the Sitra Achra (The holy Zohar Vayakhel)

14- The teshuvah for this sin is the hardest of all other sins in the Torah (The holy Zohar Vayakhel)

15- He will not live in the seventh millennium (The holy Zohar Beshallach)

16- The Keriat Shema that he says is not heard above (Tikkune Zohar, 62)