Psalm 101
Verse 1
I will 1 sing of mercy and judgment: unto thee, O LORD, will I sing.
David considers what manner of King he would be, when God would place him in the throne, promising openly, that he would be merciful and just.
Verse 2
I will behave myself wisely in a perfect way. 1 O when wilt thou come unto me? I will walk within my house with a perfect heart.
Though as yet you deferred to place me in the kingly dignity, yet I will give myself to wisdom and uprightness being a private man.
Verse 3
I will set no wicked thing before mine eyes: I hate 1 the work of them that turn aside; it shall not cleave to me.
He shows that magistrates do not do their duties, unless they are enemies to all vice.
Verse 5
Whoso privily 1 slandereth his neighbour, him will I cut off: him that hath an high look and a proud heart will not I suffer.
In promising to punish these vices, which are most pernicious in them that are about Kings, he declares that he will punish all.
Verse 6
Mine eyes shall be upon the 1 faithful of the land, that they may dwell with me: he that walketh in a perfect way, he shall serve me.
He shows what the true use of the sword is, to punish the wicked and to maintain the good.
Verse 8
1 I will early destroy all the wicked of the land; that I may cut off all wicked doers from the city of the LORD.
Magistrates must immediately punish vice, lest it grow to further inconvenience; and if heathen magistrates are bound to do this, how much more they who have the charge of the Church of God?