1) In his letter to heliocentrist Paolo Antonio Foscarini he stated that according to all the holy scripts and sources it is already known that the sun is in heaven and it turns around the earth with great speed, and that the earth is very far from heaven and sits motionless at the center of the world.
2) In the second part of the letter, Cardinal Bellarmine stated that those who wrote Holy Scriptures could not lie, therefore the theory of the sun in the centre of a great deal of planets makes no sense. He also added that he would not believe that there is such a demonstration, until it was shown him.