Job 5:25

Thou shalt know By assurance from God's promises, the impressions of his Spirit, and by experience, in due time, that thy seed shall be great Thy posterity, which God shall give thee, instead of those whom thou hast lost, shall be high, and honourable, and powerful: or, shall be many, as רב, rab, often signifies. And thine offspring The fruit of thy body; (for he speaks of his natural, not of his spiritual seed, as Abraham's seed is in part to be understood;) as the grass of the earth

Both for its plentiful increase, and for its flourishing greenness.