Deuteronomy 10:3

And I made an ark of shittim wood, and hewed two tables of stone like unto the first, and went up into the mount, having the two tables in mine hand.

Cross-reference

Deuteronomy 10:1 commands the making of the ark, and verse 3 records its execution immediately after.

Exodus 25:10 gives the command to build an ark of acacia wood, which Moses then carries out in Deuteronomy 10:3.

Exodus 34:4 Parallel

Exodus 34:4 describes the same event — Moses hewing new stone tablets as commanded, providing the original narrative that Deuteronomy recalls.

Exodus 37:1-9 credits Bezalel with building the ark, while Deuteronomy 10:3 says Moses made it — a different craftsman.