For thou preventest him with the blessings of goodness: thou settest a crown of pure gold on his head.
Prevent — Crowning him with manifold blessings, both more and sooner than he expected.
With — With excellent blessings.
 He asked life of thee, and thou gavest it him, even length of days for ever and ever.
For ever — Thou gavest him a long life and reign here, and after that didst translate him to live with thee for ever. But this was more eminently fulfilled in Christ, who asked of his father, life, or to be saved from death, Hebrews 5:7, though with submission to his will: but his father, though he saw it necessary to take away his temporal life, yet instantly gave him another, far more noble, even the perfect possession of an everlasting life both in his soul and body, at his right hand.
 His glory is great in thy salvation: honour and majesty hast thou laid upon him.
Glory — His fame or renown.
Salvation — By reason of those great and glorious deliverances which thou hast wrought both for him, and by him.
 For thou hast made him most blessed for ever: thou hast made him exceeding glad with thy countenance.
Countenance — Smiling upon him, by thy grace and favour.
 Thou shalt make them as a fiery oven in the time of thine anger: the LORD shall swallow them up in his wrath, and the fire shall devour them.
Oven — Like wood, which when it is cast in there, is quickly consumed.
 Their fruit shalt thou destroy from the earth, and their seed from among the children of men.
Fruit — Their children. God will take away both root and branch, the parents and all that wicked race.
 For they intended evil against thee: they imagined a mischievous device, which they are not able to perform.
Thee — Against God, not directly, but by consequence, because it was against David, whom God had anointed, and against the Lord's people, whose injuries God takes as done to himself.
 Be thou exalted, LORD, in thine own strength: so will we sing and praise thy power.
Exalted — By thy own power, or by the manifestation thereof.