And, or for, as this particle is oft used, as Psalms 60:12 Psalms 108:13 Proverbs 4:17; this being the proof of that blessedness of a good man, which he had only asserted, Psalms 1:1. By the rivers, i.e. a river; the plural number being put for the singular, as it is Judges 12:7 Jonah 1:5, and oft elsewhere. In his season, i.e. in the time of fruit-bearing; which being applied to the good man, notes either,
1. His active goodness, that he seeketh and improveth all opportunities for the doing of good, exercising godliness, justice, temperance, charity, patience, &c., according to the several occasions offered to him. Or rather,
2. His certain prosperity and happiness, as may be gathered from the end of this verse, and the opposite state of the ungodly, Psalms 1:4,5; that he shall have the fruit or benefit of his godly life in due time, or when it is expedient for him; possibly in this life, but assuredly in the next life. His leaf also shall not wither; his happiness is not short and transitory, as all worldly felicity is; but fixed and everlasting, like those trees which are continually green and flourishing: or, and (like a tree) whose leaf never withers. Whatsoever he doeth shall prosper; all his actions shall be crowned with success, and a blessed end or effect: see Romans 8:28.