For all the wells which his father's servants had digged in the days of Abraham his father, the Philistines had stopped them, and filled them with earth.
Ver. 15. The Philistines had stopped them.] They deprived themselves of the benefit of those wells, so that Isaac might not water at them. Envy doth nothing with reason. It is vitium diabolicum, saith Augustine. a The devil, of pure spite, hinders men from heaven: he rageth and rangeth, roaring up and down, "seeking whom to devour"; and not caring to be doubly damned himself, so that others may not be saved. We should be so far from envying at the happiness of others, that we should rejoice in it. This were to be as the angels of God; and the contrary, is to be like the devils of hell, as Saul was, who, because he could not see David's heart, fed upon his own. Envy devours itself, as the worm doth the nut out of which it grows.
a Aug. in Ps. cxxxix.