תֶּן־חֵ֥לֶק לְשִׁבְעָ֖ה וְגַ֣ם לִשְׁמוֹנָ֑ה כִּ֚י לֹ֣א תֵדַ֔ע מַה־יִּהְיֶ֥ה רָעָ֖ה עַל־הָאָֽרֶץ׃
Divide a portion into seven, yea, even into eight; For thou knowest not what evil shall be upon the earth.
Read kabbalistic (mystical) interpretation of Ecclesiastes 11:2: and classical mystical sources.