Exodus 16:23 gives the instruction to prepare manna for the Sabbath — on this day Moses commands eating that prepared portion.

Exodus 16:29 explains that God gave the Sabbath and double manna, so no one should go out — reinforcing the command to stay in on the Sabbath.

Nehemiah 9:14 recalls God making known the holy Sabbath through Moses — a later reflection on the Sabbath institution seen in this manna event.