Exodus 20:26 in the World English Bible
You shall not go up by steps to my altar, that your nakedness may not be exposed to it.’
Context
25 And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.
26 Neither shalt thou go up by steps unto mine altar, that thy nakedness be not discovered thereon.