Psalms 37:15

Their sword shall enter into their own heart
As Saul's did into his, ( 1 Samuel 31:4 ) ;

and their bows shall be broken;
the meaning is, that their efforts shall be fruitless, and their attempts in vain; the mischief they have contrived and designed for others shall fall upon themselves; see ( Psalms 7:15 ) ; and therefore the saints should not be fretful and envious.