Exodus 35:12 Kabbalah

אֶת־הָאָרֹ֥ן וְאֶת־בַּדָּ֖יו אֶת־הַכַּפֹּ֑רֶת וְאֵ֖ת פָּרֹ֥כֶת הַמָּסָֽךְ׃

the ark, and the staves thereof, the ark-cover, and the veil of the screen;

Read kabbalistic (mystical) interpretation of Exodus 35:12: and classical mystical sources.