Many people say, "I can see." and yes, they can physically see but their spiritual eyes as mentioned in John 9:41. The guilt of so many people remain because they claim that they know spiritual truth but in reality they are blind to it. Even when the Gospel message is clear in its meaning, they are still missing the point because Satan puts stumblingblocks. When they are not saved but think that they are working for God and not Satan, it's Satan's deception at work. These people need intervention because they are spiritually blinded by Satan. There is no room for any Burger King theology or the feel good "gospel" - it must be the clear Gospel of the severity of sin and the Lord Jesus Christ as that Savior from sin.
The message of the Bible never changes just because people are spiritually blind. It must not be adjusted to them because the truth of Scripture never changes. Most people only want the convenient truth but not the inconvenient truth. People who are blind need to be led to the proper path and not to be further deceived by another blind man. When the blind man leads the blind man then both are destined to fall into disaster. In the spiritual sense, false preachers are the blind leading the blind. It takes a man who can see clearly to lead the blind person to safety.