Exodus 31:11

and the anointing oil, and sweet incense for the Holy Place; according to all that I have commanded thee shall they do. The entire work was entrusted to the Jewish artisans under the leadership of these two masters, for it was necessary that the workmanship throughout be of the very best. It is well-pleasing to the Lord if work done in His service is performed with painstaking care, as being really worthwhile.