וְעָשִׂ֣יתָ פָרֹ֗כֶת תְּכֵ֧לֶת וְאַרְגָּמָ֛ן וְתוֹלַ֥עַת שָׁנִ֖י וְשֵׁ֣שׁ מָשְׁזָ֑ר מַעֲשֵׂ֥ה חֹשֵׁ֛ב יַעֲשֶׂ֥ה אֹתָ֖הּ כְּרֻבִֽים׃
And thou shalt make a veil of blue, and purple, and scarlet, and fine twined linen; with cherubim the work of the skilful workman shall it be made.
Read kabbalistic (mystical) interpretation of Exodus 26:31: and classical mystical sources.