The enemies of God and of His people have always sought to conquer those weak in the faith by destroying their faith. Even now, false teachers seek to deceive the hearts of the simple – those who lack knowledge, understanding, and wisdom (Proverbs 8:5; Proverbs 9:4, 13). According to the scripture, these teachers do so “by good words and fair speeches.” It is not some raving, ranting lunatic that is most dangerous; it is the sweet talking, kind, loving, liar. In order to gain a following, a teacher must only appeal to others by sounding intelligent and offering “fair speeches” sprinkled with truth. If he can present things new to his audience, whether factual or not, the simple will become enamoured with his abilities and follow his teachings. This is why the Bible warns believers to have no fellowship with those who teach things contrary to the scripture. Any world religious leader who speaks softly and kindly yet fails to proclaim the true gospel probably lives more like a devil in private. The Bible calls these people wolves in sheep’s clothing.
A tender heart quickly and readily yields when offered correction; however, as a heart becomes hardened, the times of yielding become fewer and farther apart. During the hardening process, the individual finds the true nature of the heart more difficult to grasp. As the heart further hardens, the individual finds himself involved in further defiance. The mischief may start as seemingly insignificant, but a hardening heart will ultimately lead to greater depths of wickedness, some seemingly unimaginable only a short time ago. Some of the worst sins committed in the Bible by God's people were committed by those who shortly before had displayed a tender heart. Yet, they allowed their hearts to be hardened by the deceitfulness of sin.
