In Shemot 12:37, an approximate figure for Exodus participants is given
Am I to assume that there was an actual but unmentioned census between the 1st and 14th of Nisan that also involved half shekels and this silver went to the (undecreed) Mishkan?
The Mishkan was traditionally completed Day 25 Month 9 Year 1 (25 Kislev) and was packed away before being set up on 1/1/2. Why did God wait after the Mishkan was set up to decree more silver was to be amassed? He could have had them perform the census on Purim (Day 15 Month 12) so they would have 2 weeks to gather the silver and make the sockets.
What am I missing?