The domination of evil, if protracted too long, may tempt good men, who are righteous because they trust, to lose their faith and so to lose their righteousness, and make common cause with apparently triumphant iniquity. It needs Divine wisdom to determine how long a trial must last in order that it may test faith, thereby strengthening it, and may not confound faith, thereby precipitating feeble souls into sin. He knows when to say, It is enough. So the psalm ends with prayer and prediction, which both spring from the insight into Jehovah's purposes which trust gives. The singer asks that the good may receive good, in accordance with the law of retribution. The expressions describing these are very noticeable, especially when connected with the designation of the same persons in ver. 1 as those who trust in Jehovah. Trust makes righteous and good and upright in heart. If these characteristics are to be distinguished, _righteous_ may refer to action in conformity with the law of God, _good_ to the more gentle and beneficent virtues, and _upright in heart_ to inward sincerity. Such persons will get "good" from Jehovah, the God of recompenses, and that good will be as various as their necessities and as wide as their capacities. But the righteous Protector of those who trust in Him is so, partly because He smites as well as blesses, and therefore the other half of the law of retribution comes into view, not as a petition, but as prediction. The psalmist uses a vivid image to describe half-hearted adherents to the people of Jehovah: "they bend their ways," so as to make them crooked. Sometimes the tortuous path points towards one direction, and then it swerves to almost the opposite. "Those crooked, wandering ways," in which irresolute men, who do not clearly know whether they are for Jehovah or for the other side, live lives miserable from vacillation, can never lead to steadfastness or to any good. The psalmist has taken his side. He knows whom he is for; and he knows, too, that there is at bottom little to choose between the coward who would fain be in both camps and the open antagonist. Therefore they shall share the same fate. Finally the poet, stretching out his hands over all Israel, as if blessing them like a priest, embraces all his hopes, petitions, and wishes in the one prayer "Peace be upon Israel!" He means the true Israel of God (Gal. vi. 16), upon whom the Apostle, with a reminiscence possibly of this psalm, invokes the like blessing, and whom he defines in the same spirit as the psalmist does, as those who walk according to this rule, and not according to the crooked paths of their own devising. PSALM CXXVI.