Now if you make an altar of stones for Me, you must not build it with stones shaped by tools; for if you use a chisel on it, you will defile it.
Jewish Publication Society of America Version (JPS1917) - Exodus 20:25 >(20-22) And if thou make Me an altar of stone, thou shalt not build it of hewn stones; for if thou lift up thy tool upon it, thou hast profaned it.