mark 4:15 And these are they by the way side, where the word is sown; but when they have heard, Satan cometh immediately, and taketh away the word that was sown in their hearts. - Free Bible Online

      15. And these are they by the wayside, where the word is sown; but, when they have heard, &c.--or, more fully (Mt 13:19), "When any one heareth the word of the kingdom, and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart." The great truth here taught is, that hearts all unbroken and hard are no fit soil for saving truth. They apprehend it not (Mt 13:19) as God's means of restoring them to Himself; it penetrates not, makes no impression, but lies loosely on the surface of the heart, till the wicked one--afraid of losing a victim by his "believing to salvation" (Lu 8:12) --finds some frivolous subject by whose greater attractions to draw off the attention, and straightway it is gone. Of how many hearers of the word is this the graphic but painful history!

JFB.