Romans 1:20, HCSBFor His invisible attributes, that is, His eternal power and divine nature, have been clearly seen since the creation of the world, being understood through what He has made. As a result, people are without excuse.
No person has ever nor will ever get a "free pass" by claiming that they were unaware there was a God. Should we view this as implied permission to not preach the Gospel? Certainly not! If a person's response to Christ's sacrifice absolutely and without exception determines their eternal destination, we should be all the more driven to share the good news of the Gospel with others.