Psalms 7:14-16

Verse 14

He travaileth with iniquity - All these terms show the pitch of envy, wrath, and malevolence, to which Saul had carried his opposition against David. He conceived mischief; he travailed with iniquity; he brought forth falsehood - all his expectations were blasted.
Verse 15

He made a pit - He determined the destruction of David. He laid his plans with much artifice; he executed them with zeal and diligence; and when he had, as he supposed, the grave of David digged, he fell into it himself! The metaphor is taken from pits dug in the earth, and slightly covered over with reeds &c. so as not to be discerned from the solid ground; but the animal steps on them, the surface breaks, and he falls into the pit and is taken. "All the world agrees to acknowledge the equity of that sentence, which inflicts upon the guilty the punishment intended by them for the innocent." - Horne.
Verse 16

Shall come down upon his own pate - Upon his scalp, קדקד kodkod, the top of the head. It may refer to knocking the criminal on the head, in order to deprive him of life. Had scalping been known in those days, I should have thought the reference might be to that barbarous custom.
Copyright information for Clarke