God Revealed the Design of the Ark to Moses

The Arks Design was Revealed to Moses on Mount Sinai. The Ark of the Covenant (Heb. Ahrohn HaBreet) was a small wooden box or chest (approx. 3.9 feet by 2.3 feet) that contained the covenant made by the LORD to the people of Israel. God revealed to Moses on Mount Sinai the exact specifications for constructing the Ark. It was crafted in acacia wood and overlaid with gold, and inside was placed the unbroken stone tablets of the Law, a golden pot of manna, and Aarons rod that miraculously budded or blossomed. The lid was called the Mercy Seat and it was made from one piece of solid gold, beaten into a shape that revealed two angelic creatures (Cherubim) on each side with wings outstretched. God appeared between the Cherubim where the blood was sprinkled by the high priest on the Day of Atonement. The LORD also appeared and spoke between the Cherubim. There were poles inserted in the rings in each of the 4 corners of the ARK for carrying. When the Israelites journeyed through the wilderness the Ark was carried first by the priests to lead the way. The mysterious Shekinah Glory "Cloud of the LORD" would lead them by day and it became a Pillar of Fire by night. When the people encamped in the wilderness the Tabernacle was set up and the Ark of the Covenant was placed in the Holy of Holies behind the Veil. When they departed the Tabernacle was packed up in an orderly manner.

Link: https://bible-history.com/biblestudy/the-ark-of-the-covenant