He made a pit, and digged it, and is fallen into the ditch which he made.
A pit - such as is prepared with branches and foliage over it, to entrap wild beasts in. How striking the righteous retribution in kind dealt by God to Saul! He had plot against David (1 Samuel 18:17), "Let not mine hand be upon him, but let the hand of the Philistines be upon him." But David was actually saved by the Philistines, and Saul was slain by the Philistines (1 Samuel 27:1-3; 1 Samuel 31:2.
Digged it - `hollowed it out,' marking the malicious care of the wicked plotter to make it as deep as possible, to entrap and kill the godly.