Job 14:8 Kabbalah

אִם־יַזְקִ֣ין בָּאָ֣רֶץ שָׁרְשׁ֑וֹ וּ֝בֶעָפָ֗ר יָמ֥וּת גִּזְעֽוֹ׃

Though the root thereof wax old in the earth, And the stock thereof die in the ground;

Read kabbalistic (mystical) interpretation of Job 14:8: and classical mystical sources.