Great dispatch must have been observed in the work, for it was not much above five months from the beginning to the finishing of it. Genesis 27:20; 2 Chronicles 29:36.
Related Commentaries of Exodus 39:31
Exodus 39:31-32
31 And they tied unto it a lace of blue, to fasten it on high upon the mitre; as the LORD commanded Moses.
32 Thus was all the work of the tabernacle of the tent of the congregation finished: and the children of Israel did according to all that the LORD commanded Moses, so did they.