When men choose to reject the truth, God tends to withhold further truth from them. The result is spiritual and intellectual darkness.
All men, at some point in their lives, are confronted with the truth. At such time, men must choose to accept or reject that truth.
What if God was true, but on a limited basis? This would be a cause for great concern; however, this is quelled by the fact that He is both true and faithful.
Men could know the truth if they desired to know it. Sadly, most men refuse to pursue and know the truth made so readily available unto them.
