"And he shall be like a tree planted by the streams of water, that bringeth forth its fruit in its season, whose leaf also doth not wither; and whatsoever he doeth shall prosper." ~ Psalm 1:3
“And he shall be like a tree planted;” not a wild tree, but “a tree planted,” chosen, considered as property, cultivated and secured from the last terrible uprooting, for “every plant, which my heavenly Father hath not planted, shall be rooted up:” Mat_15:13.
“By the rivers of water;” so that even if one river should fail, he hath another. The rivers of pardon and the rivers of grace, the rivers of the promise and the rivers of the communion with Christ, are never-failing sources of supply.
He is “like a tree planted by the rivers of water, that bringeth forth his fruit in his season;” not unseasonable graces, like untimely figs, which are never full-flavoured. But the man who delights in God's Word, being taught by it, bringeth forth patience in the time of suffering, faith in the day of trial, and holy joy in the hour of prosperity. Fruitfulness is an essential quality of: a gracious man, and that fruitfulness should be seasonable.
“His leaf also shall not wither;” his faintest word shall be everlasting; his little deeds of love shall be had in remembrance. Not simply shall his fruit be preserved, but his leaf also. He shall neither lose his beauty nor his fruitfulness.
“And whatsoever he doeth shall prosper.” Blessed is the man who hath such a promise as this. But we must not always estimate the fulfilment of a promise by our own eye-sight. How often, my brethren, if we judge by feeble sense, may we come to the mournful conclusion of Jacob, “All these things are against me!” For though we know our interest in the promise, yet are we so tried and troubled, that sight sees the very reverse of what that promise foretells. But to the eye of faith this word is sure, and by it we perceive that our works are prospered, even when everything seems to go against us. It is not outward prosperity which the Christian most desires and values; it is soul prosperity which he longs for. We often, like Jehoshaphat, make ships to go to Tarshish for gold, but they are broken at Ezion-geber; but even here there is a true prospering, for it is often for the soul's health that we should be poor, bereaved, and persecuted. Our worst things are often our best things. As there is a curse wrapped up in the wicked man's mercies, so there is a blessing concealed in the righteous man's crosses, losses, and sorrows. The trials of the saint are a divine husbandry, by which he grows and brings forth abundant fruit. C. H. Spurgeon