Who could understand the Word of God from the stars in the beginning?
Adam was able to comprehend the Word of God written in the stars, and the pre-flood people understood it as well. The pre-flood patriarchs had a good understanding of the Word of God by studying the stars before Satan adulterated the original message.
Les explains that Scripture indicates the Word of God was written in the stars once upon a time. He says Adam was able to comprehend it, and the pre-flood people comprehended that the very makeup of the constellations and planets was to be interpreted as the very Word of God. Satan adulterated it, but in its original format, the pre-flood patriarchs had a pretty good understanding of the Word of God just by studying the stars. This connects with Paul's message to the pagan Greeks, who had no written scripture but should have had a knowledge of the Creator God behind it all.