In Exodus 31:1-6 and chapters 36 to 39, Bezalel, Bezaleel, or Betzalel, was the chief artisan of the Tabernacle and was in charge of building the Ark of the Covenant, assisted by Oholiab. The section in chapter 31 describes his selection as chief artisan, in the context of Moses' vision of how God wanted the tabernacle to be constructed, and chapters 36 to 39 recount the construction process undertaken by Bezalel, Oholiab and every gifted artisan and willing worker, in accordance with the vision.
The Goldsmith, gouache on board, c. 1896-1902, by James Tissot (The Jewish Museum, NY)
Bezalel, Oholiab and an assistant produce vessels for the tabernacle (engraving by Pieter Jacopsz Paets, 1645)
According to the Hebrew Bible, the tabernacle, also known as the Tent of the Congregation, was the portable earthly dwelling used by the Israelites from the Exodus until the conquest of Canaan. Moses was instructed at Mount Sinai to construct and transport the tabernacle with the Israelites on their journey through the wilderness and their subsequent conquest of the Promised Land. After 440 years, Solomon's Temple in Jerusalem superseded it as the dwelling-place of God.
Model of the tabernacle in Timna Valley Park, Israel
The tabernacle, engraving from Robert Arnauld d'Andilly's 1683 translation of Josephus.
Tabernacle Tent dimensions according to the Book of Exodus
Tabernacle Tent and Courtyard dimensions according to the Book of Exodus