Ver. 4 blends consequences of righteousness and characterisation of it, in a remarkable way. The construction is doubtful. In _a_, "upright" is in the plural, and the adjectives in _b_ are in the singular number. They are appended abruptly to the preceding clause; and the loose structure has occasioned difficulty to expositors, which has been increased by the scruples of some, who have not given due weight to the leading thought of correspondence between the human and Divine, and have hesitated to regard ver. 4_b_ as referring to the righteous man, seeing that in Psalm cxi. 4_b_ it refers to God. Hence efforts have been made to find other renderings. Delitzsch would refer the clause to God, whom he takes to be meant by "light" in the previous clause, while Hitzig, followed by Baethgen, would translate, "As a light, he (the righteous) rises in darkness for the upright," and would then consider "gracious," etc., as in apposition with "light," and descriptive of the righteous man's character as such. But the very fact that the words are applied to God in the corresponding verse of the previous psalm suggests their application here to the godly man, and the sudden change of number is not so harsh as to require the ordinary translation to be abandoned. However dark may be a good man's road, the very midnight blackness is a prophecy of sunrise; or, to use another figure,
"If winter comes, can spring be far behind?"
(Compare Psalm xcvii. 11.) The fountain of pity in human hearts must be fed from the great source of compassion in God's, if it is to gush out unremittingly and bless the deserts of sorrow and misery. He who has received "grace" will surely exercise grace. "Be ye merciful, even as your Father is merciful" (Luke vi. 36).
Ver. 5 blends characteristics and consequences of goodness in reverse order from that in ver. 4. The compassionate man of ver. 4_b_ does not let pity evaporate, but is moved by it to act and to lend (primarily money, but secondarily) any needful help or solace. Benevolence which is not translated into beneficence is a poor affair. There is no blessing in it or for it; but it is well with the man who turns emotions into deeds. Lazy compassion hurts him who indulges in it, but that which "lends" gets joy in the act of bestowing aid. The result of such active compassion is stated in ver. 5_b_ as being that such a one will "maintain his causes in judgment," by which seems to be meant the judgment of earthly tribunals. If compassion and charity guide a life, it will have few disputes, and will contain nothing for which a judge can condemn. He who obeys the higher law will not break the lower.
Vv. 6-8 dwell mainly on one consequence of righteousness, namely, the stability which it imparts. While such a man lives, he shall be unmoved by shocks, and after he dies, his memory will live, like a summer evening's glow which lingers in the west till a new morning dawns. In ver. 7 the resemblance of the godly to God comes very beautifully to the surface. Psalm cxi. 7 deals with God's commandments as "trustworthy." The human parallel is an _established_ heart. He who has learned to lean upon Jehovah (for such is the literal force of "trusting" here), and has proved the commandments utterly reliable as basis for his life, will have his heart steadfast. The same idea is repeated in ver. 8 with direct quotation of the corresponding verse of Psalm cxi. In both the word for "established" is the same. The heart that delights in God's established commandments is established by them, and, sooner or later, will look in calm security on the fading away of all evil things and men, while it rests indeed, because it rests in God. He who builds his transient life on and into the Rock of Ages wins rocklike steadfastness, and some share in the perpetuity of his Refuge. Lives rooted in God are never uprooted.