Why was Israel instructed to place graven images of kruvim atop the Ark of the Covenant in the Holy of Holies?

Why was shaatnez permitted in the Mishkan (and later the Mikdash)?

How did Moshe and Aharon differ in their understandings of the Mishkan's purpose?

What can the Mishkan teach us about the ways Divine revelation is channeled into our world?

Rabbi Yehuda Hakohen with all the answers.