For many years, since 1991 when Parsha Ki Tisa marked my son Philip’s Bar Mitzvah, I have spoken of a posuk in our Parsha which alludes to an event which took place 40 year later, in a subsequent Parsha.
The posuk being referred to (Sh’mos, Perek 30, posuk 30)says that while Moshe Rabbeinu was on Har Sinai being given Torah, Hashem said, “You shall anoint Aaron and his sons and sanctify them to minister (to serve) me.”