The truth is more valuable than any earthly possession and it would be worth a man selling everything he owns just to possess the truth.
When men choose to reject the truth, God tends to withhold further truth from them. The result is spiritual and intellectual darkness.
Most men would rather accept lies than to believe the truth. This bias against the truth has been present as far back as the garden of Eden.
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.