Mattityahu 18:4-6

Orthodox Jewish Bible

⁴ Therefore, whoever humbles himself as this yeled, he is the greatest in the Malchut HaShomayim.

⁵ And whoever receives one such yeled in my Name receives me [Moshiach].

⁶ But whoever causes a michshol (stumbling block) for one of these little ones, who have emunah in me, it is better for him that a heavy millstone be hung around his neck, and that he be drowned in the depth of the sea.