Examples from Scripture that refute the notion that there is such a thing as progressive revelation - God allowed people to sin for a while in the Old Testament times:

• "Jesus Christ the same yesterday, and to day, and for ever." (Heb 13:8)
• God punished His people for transgressions, over and over again, since He is true to His covenant and upholds His Law. The whole Old Testament is full of such accounts. Our suggestion would be to read the five books of Moses, and the prophets Isaiah and Jeremiah as examples, to get an idea of God's righteousness.

When it comes to the Scriptures, Mark Twain's remark applies in an interesting way:

"It is not what you do not know that will hurt you the most. It is what you think you know, but it just ain’t so!"