Exodus 8:5

8:5 The Lord spoke to Moses, “Tell Aaron, ‘Extend your hand with your staff over the rivers, over the canals, and over the ponds, and bring the frogs up over the land of Egypt.’”

Exodus 25:12

25:12 You are to cast four gold rings for it and put them on its four feet, with two rings on one side and two rings on the other side.

Exodus 28:21

28:21 The stones are to be for the names of the sons of Israel, twelve, according to the number of their names. Each name according to the twelve tribes is to be like the engravings of a seal.