Adam Clarke on Psalms 101:8

I will early destroy - I will take the first opportunity of destroying all the wicked of the land. I will purify my court, purge Jerusalem, and cleanse the whole land of every abomination and abominable person; so that the city of my God, where holiness alone should dwell, shall indeed become the Holy City; that the state may be made prosperous, and the people happy. Such an administration must have been a good one, where such pious caution was used in choosing all the officers of the state.