Thomas Jefferson was a man of a very powerful intellect. He made many improvements in agriculture, politics and various inventions.
As I mentioned elsewhere, he did have one shortcoming, which could very well hurt him on an eternal scale.
He wrote what he called "The Jefferson Bible", wherein he 'edited' the real Bible. He left large parts out, and added some of his own opinions, despite warning to the contrary. These warnings were given in the 3rd and 4th verses from the end of the Bible.. likely a final warning.. ..But then, none of us are free from sin..
18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book. (Rev 22:18,19 KJV)