Q. On Parshas Vayakhel we read that when Moshe Rabenu saw the great work done in building the Mishkan he blessed the workers.
Rashi quotes Chazal that the blessing Moshe gave them was “May the Divine Presence of Hashem rest in the work of your hands.” Why did Moshe wait to bless them with this brocho after everything was finished? Would it not be more sensible to give them the brocho when most needed, at the beginning of their endeavor?
A. The Yitav Leib mentions that every human endeavor undergoes the stages of conception, pregnancy and birth. However, the seuda and celebration is done when the baby is born, not before.
Indeed Moshe Rabenu blessed Betzalel and the workers with “May the Divine Presence of Hashem rest in the work of your hands,” when they were finished. He gave them the recognition to a job well done. But he also hinted to the wise principle that: “The road to success is always under construction,” and “A winner is someone who gets up one more time than he is knocked down.”
See another answer at ‘That is’ on this Parsha and on Vayakhel 76
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit’a