We Will Build the Third Beis Hamikdash With Moshiach

The third Beis Hamikdash (Holy Temple) will be built by Moshiach, and everyone has to help – both men and women, just like when the Jews built the Mishkan (Tabernacle) in the desert and everyone donated fine materials for it. Even children will donate, as they did in the desert! Especially since in our times, we train children to give Tzedakah, not only by making them emissaries to give Tzedakah, but also by giving money that becomes their own personal money, so that they will give from their own money to Tzedakah.

(See talk of the Lubavitcher Rebbe King Moshiach Shlita, Terumah 5752 (1992))