וְהָי֤וּ לִמְאוֹרֹת֙ בִּרְקִ֣יעַ הַשָּׁמַ֔יִם לְהָאִ֖יר עַל־הָאָ֑רֶץ וַֽיְהִי־כֵֽן׃
and let them be for lights in the firmament of the heaven to give light upon the earth.’ And it was so.
Read kabbalistic (mystical) interpretation of Genesis 1:15: and classical mystical sources.