The confidence and resolve ground themselves on God's holiness, through which the necessary condition of approach to Him comes to be purity--a conviction which finds expression in all religions, but is nowhere so vividly conceived or construed as demanding such stainless inward whiteness as in the Psalter. The "for" of ver. 4 would naturally have heralded a statement of the psalmist's grounds for expecting that he would be welcomed in his approach, but the turn of thought, which postpones that, and first regards God's holiness as shutting out the impure, is profoundly significant. "Thou art not a God that hath pleasure in wickedness" means more than the simple "Thou hast not pleasure" would do; it argues from the character of God, and glances at some of the foul deities whose nostrils snuff up sensual impurity as acceptable sacrifice. The one idea of absolute contrariety between God and evil is put in a rich variety of shapes in vv. 4-6, which first deal with it negatively in three clauses (_not a God_; _not dwell_; _not stand in Thy sight_) and then positively in other three (_hatest_; _shalt destroy_; _abhorreth_). "Evil shall not sojourn with Thee." The verb is to be taken in its full meaning of sojourning as a guest-friend, who has the right to hospitality and defence. It thus constitutes the antithesis to ver. 7. Clearly the sojourning does not mean access to the temple, but abiding with God. The barriers are of the same nature as the communion which they hinder, and something far deeper is meant than outward access to any visible shrine. No one sojourned in the temple. In like manner, the "standing in Thy sight" is a figure drawn from courts, reminding us of "my King" in ver. 2 and suggesting the impossibility of evil or its doers approaching the Divine throne. But there is more than a negative side to the relation between God and evil, which the psalm goes on to paint in sombre colours, for God not only does not delight in sin, but hates it with a hatred like the physical loathing of some disgusting thing, and will gather all His alienation into one fatal lightning bolt. Such thoughts do not exhaust the truth as to the Divine relation to sin. They did not exhaust the psalmist's knowledge of that relation, and still less do they exhaust ours, but they are parts of the truth to-day as much as then, and nothing in Christ's revelation has antiquated them.