This article on Yahoo News documents the futility in staving off sin through human willpower alone. Teenagers making the vow to wait until marriage for sex are just as likely to engage in premarital sex as those who do not make the pledge. In a society that promotes sexuality on every billboard and in every television show, it is no wonder that our young people are succumbing to their fleshly desires so readily.
Nothing we do can break our enslavement to sin. No pledge, vow, or effort of willpower will loosen its hold over us. This is why the popular teen virginity pledge is nothing more than a senseless work of the flesh. Sexual lust may be contained for a time, but inevitably it will return with an appetite more powerful than ever. For that matter, any sin can only be restrained temporarily. A dog always returns to its own vomit and a sow to the mud.
“Truly, truly, I say to you, everyone who commits sin is a slave to sin” (John 8:34, ESV).
The cords of slavery can only be cut by the righteous work of Jesus Christ on the Cross. The atoning death and resurrection of Jesus is what will set anybody free.