He, i.e. the wicked, as is undeniably manifest from the matter and context. Conceived mischief, and brought forth falsehood: this metaphor noteth his deep design, and continued course, and vigorous endeavours for the doing of mischief, and his restlessness and pain till he have accomplished it.
Related Commentaries of Psalms 7:14
Psalms 7:14
14 Behold, he travaileth with iniquity, and hath conceived mischief, and brought forth falsehood.