"For I can testify about them that they are zealous for God, but their zeal is not based on knowledge. Since they did not know the righteousness that comes from God and sought to establish their own, they did not submit to God’s righteousness. Christ is the end of the law so that there may be righteousness for everyone who believes." -- Romans 10:2-4
The pilot announced, "I have good news and bad news; the good news is, we're making great time and the bad news is, we're lost." Yes, it's an old worn out joke, but it readily applies in this case. Zeal and progress may be tremendous, but when the knowledge is lacking and the direction is wrong, all is lost.
Religion may seem to be just right, but if it isn't true to Scripture then people will suffer, both now and eternally. Paul wrote about his nation and the incredible zeal they had for God. Their relationship was solely built on a righteousness of their own without submitting to God's righteousness. For these "religious" people, there was no place for Christ, the end of the law.
Too many people are under the persuasion that they "know" all there is about the Bible and religion. Their zeal is unfounded and misdirected as a result. The reason to read the Scriptures is to find truth and find our way to God. While Paul wrote in verse 13, “Everyone who calls on the name of the Lord will be saved”, he also wrote in verse 17, "Consequently, faith comes from hearing the message, and the message is heard through the word of Christ." Don't be in such a hurry that you lose your way. Stop and read the Word and be zealous for what is true.
Think about this: "Zeal is like fire; in the chimney it is one of the best servants, but out of the chimney it is one of the worst masters."
- Thomas Brooks