פרשת תרומה תשי"ז - "ועשו לי מקדש..."

It is a positive obligation to build a house for God where offerings may be brought and to make pilgrimage to it three times a year as it says "and they shall make Me a sanctuary." The tabernacle which Moses made in the desert has already been described in the Torah, but it was a temporary measure, as it says "for you have not yet reached, etc."

That I may dwell among (within) them: It does not say "within it," which means that the place that God will sanctify to dwell there is within the children of Israel that encircle the Tabernacle with four banners.

And let them make Me a sanctuary, that I may dwell among them.

ועשו לי מקדש AND LET THEM MAKE ME A SANCTUARY — Let them make to the glory of My Name (cf. Rashi on v. 2) a place of holiness.

And let them make Me a sanctuary, that I may dwell among them.