Wait on the Lord - See the notes at Psalms 37:9. Let your hope be from the Lord; depend wholly upon Him; have such confidence in Him as to expect His gracious interposition in your behalf.
And keep his way - Or, walk in the path which He commands. Do not turn from that at any thee. Do not allow any temptation, or any opposition, to cause you to swerve from that path.
And he shall exalt thee to inherit the land - See Psalms 37:3, Psalms 37:9,Psalms 37:18.
When the wicked are cut off, thou shalt see it - This implies that they would certainly be cut off, and that the righteous would be permitted to see the result of a course of righteousness and one of wickedness. It is not necessarily implied that they would have any satisfaction in seeing the punishment of the wicked; but the meaning is, that they would be permitted to live so as to see that one course of life tended to secure the favor of God, and another to incur His displeasure; that there was an advantage in virtue and religion in this life; and the certainty that they would see this is adverted to as a “motive” for leading a life of piety. The result is so sure that a man may, if he live long, see it himself; and the fact that this is so should be an inducement for his leading a holy life. The psalmist proceeds, in Psalms 37:35-36, to illustrate this idea from his own observation.