Shemot 20:25-26

Orthodox Jewish Bible

²⁵ And if thou wilt make Me a Mizbe’ach avanim, thou shalt not build it of cut stone; for if thou lift up thy tool upon it, thou hast rendered it polluted.

²⁶ Neither shalt thou go up by stairs unto Mine Mizbe’ach, that thy nakedness be not discovered thereon.