I will sing of mercy and judgment: unto thee, O LORD, will I sing.
I will sing — I will praise thee, O Lord, for thy mercy and justice, which thou hast so eminently discovered in the government of the world, and of thy people; and I will make it my care to imitate thee herein.
 I will behave myself wisely in a perfect way. O when wilt thou come unto me? I will walk within my house with a perfect heart.
I will — I will manage all my affairs with wisdom and integrity.
When — God is often said in scripture to come to men, when he fulfills a promise to them.
House — In my court and family, as well as in my public administrations.
 A froward heart shall depart from me: I will not know a wicked person.
Depart — Shall be turned out of my court.
Know — Not own nor countenance.
 I will early destroy all the wicked of the land; that I may cut off all wicked doers from the city of the LORD.
Early — Speedily; as soon as I am seated in the throne.