וְכֹֽתָרֹ֗ת אֲשֶׁר֙ עַל־רֹ֣אשׁ הָעַמּוּדִ֔ים מַעֲשֵׂ֖ה שׁוּשַׁ֣ן בָּֽאוּלָ֑ם אַרְבַּ֖ע אַמּֽוֹת׃
And the capitals that were upon the top of the pillars in the porch were of lily-work, four cubits.
Read kabbalistic (mystical) interpretation of I Kings 7:19: and classical mystical sources.