The psalmist prays to God and waits confidently on Him on the basis of God’s character. Notice that in verse 4 the psalmist calls to mind that God does not delight in wickedness or evil. This is why he comes before the Lord early in the morning and then waits upon the Lord in his day.
What does the psalmist expect? He expects to be in the presence of God. But this is important. It is not on the basis of his righteousness, but on the basis of the steadfast love of the Lord that he will “enter your house.”
Verses 9-10 may seem a little odd. Why does the psalmist expect the mercy of God, but he expects judgement for his enemies. Verse 11 helps to solve this riddle. The psalmist has taken refuge in the Lord, whereas his enemies, as is evident from the fact that “there is no truth in their mouth” and “their inmost self is destruction,” his enemies have not taken refuge in the Lord, but still act in arrogant rebellion again God and His people.
This is one of those chapters of scripture that is often taken out of context. You could read verses 5-6, “Trust in the Lord with all your heart … and he will make straight your paths,” or verses 9-10, “Honor the Lord with your wealth … then your barns will be filled with plenty,” and errantly think that the life of the believer’s life should be perfect and easy. But then we read verse 11-12 and discover that at times the Lord will disciple and reprove. Does that automatically mean that we have lost favor with God? Not at all. That means that we are his children. We are like a son in whom the Father delights, and so we are disciplined by the Father in kind.