Psalms 58:2 - Matthew Poole's English Annotations on the Holy Bible

In heart; or, with your heart; with free choice and consent, and not only by constraint, and out of compliance with Saul. Ye weigh the violence of your hands; or, you weigh violence or injustice with your hands. The phrase of weighing hath respect to their office, which was to administer justice, which is usually expressed by a pair of balances. So he intimates that they did great wrong under the pretence and with the formalities of justice; and whilst they scented exactly to weigh and consider the true and fit proportion between the actions and the recompences allotted to them, they turned the scale; and partly to curry favour with Saul, and partly from their own malice against David, pronounced an unjust sentence against him. In the earth; or, in this land, where God is present, and where you have righteous laws to govern you, and you profess better things.