Exodus 12:48

12:48 “When a foreigner lives with you and wants to observe the Passover to the Lord, all his males must be circumcised, and then he may approach and observe it, and he will be like one who is born in the land – but no uncircumcised person may eat of it.

Exodus 36:1

36:1 So Bezalel and Oholiab and every skilled person in whom the Lord has put skill and ability to know how to do all the work for the service of the sanctuary are to do the work according to all that the Lord has commanded.”