On the other hand, humanists (those who have a materialistic worldview) place themselves in the place of God and judge all things from a human perspective, thus tacitly (or in some cases blatantly) stating "I know everything, so I can judge everything."
The person with a biblical worldview who understands the devestating effects of sin and his own limitations must state "I don't know everything. Where God has spoken clearly, I proceed with confidence. Where God's word is not clear, I proceed with caution."
The one place God's word has certainly spoken clearly is in the area of sin and salvation. What better time of year than at Christmas than to see that the "Word became flesh and dwelt among us."