Exodus 4:10
4:10 Then Moses said to the Lord, “O my Lord, I am not an eloquent man, neither in the past nor since you have spoken to your servant, for I am slow of speech and slow of tongue.”
Exodus 26:19
26:19 and you are to make forty silver bases to go under the twenty frames – two bases under the first frame for its two projections, and likewise
two bases under the next frame for its two projections;
Exodus 36:24
36:24 He made forty silver bases under the twenty frames – two bases under the first frame for its two projections, and likewise
two bases under the next frame for its two projections,
Exodus 38:30
38:30 With it he made the bases for the door of the tent of meeting, the bronze altar, the bronze grating for it, and all the utensils of the altar,