Nothing could be more appropriate as the commencement of the book of the covenant than these regulations for public worship. The rules for the building of altars must have been old and accepted, and are not inconsistent with the directions for the construction of the altar of the court of the tabernacle, Exodus 27:1-8 (compare Joshua 22:26-28).
Related Commentaries of Exodus 20:22
Exodus 20:22-26
22 And the LORD said unto Moses, Thus thou shalt say unto the children of Israel, Ye have seen that I have talked with you from heaven.
23 Ye shall not make with me gods of silver, neither shall ye make unto you gods of gold.
24 An altar of earth thou shalt make unto me, and shalt sacrifice thereon thy burnt offerings, and thy peace offerings, thy sheep, and thine oxen: in all places where I record my name I will come unto thee, and I will bless thee.
25 And if thou wilt make me an altar of stone, thou shalt not buildb 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.