Hardwired for Sin?
Can someone be genetically predisposed to violence, drug addiction, or even aberrant sexual behavior? What if homosexuality can be demonstratively shown to be a genetic predisposition?
The bottom line is that the genetic element in sin does not excuse it. To see that, it is important to put the issue into an even wider perspective. Christianity forces us again and again to widen our angle of vision, for it calls us to see everything from the perspective of a transcendent God and from the standpoint of eternity. Such perspective helps us to see our trials as “light and momentary” (II Cor. 4:17) and our sins as greater than we normally admit. From a biblical perspective, the difficult fact is that in one sense all sin is inherited. From Adam comes both our sin and our misery. We are guilty of Adam’s transgression, and through Adam we ourselves inherit sinful natures. If a genetic predisposition excuses sodomy, then our inheritance from Adam excuses all sin! But that is clearly not the case. Of course, Reformed theology construes our relationship to Adam as representative, rather than merely genetic, and that is important. But Adam represents all who are descended from him “by natural generation;” so there is also an inevitable genetic element in human sin.
-John M. Frame, “But God Made Me This Way!”