This service; which is spoken of before, and in the following verses. From this place it is evident the Israelites were not obliged to this service in the wilderness without a particular command from God. See Deuteronomy 12:1,9.
Related Commentaries of Exodus 13:5
Exodus 13:5
5 And it shall be when the LORD shall bring thee into the land of the Canaanites, and the Hittites, and the Amorites, and the Hivites, and the Jebusites, which he sware unto thy fathers to give thee, a land flowing with milk and honey, that thou shalt keep this service in this month.