It is true that the people of modern times have the benefit of the attainments of their predecessors. The men of masterly minds, who planned and studied and wrote, have left their work for those who follow. But even in this respect, and so far as merely human knowledge is concerned, how much greater the advantages of the men of that olden time! They had among them for hundreds of years him who was formed in God’s image, whom the Creator Himself pronounced “good”—the man whom God had instructed in all the wisdom pertaining to the material world. Adam had learned from the Creator the history of creation; he himself witnessed the events of nine centuries; and he imparted his knowledge to his descendants. The antediluvians were without books, they had no written records; but with their great physical and mental vigor, they had strong memories, able to grasp and to retain that which was communicated to them, and in turn to transmit it unimpaired to their posterity. And for hundreds of years there were seven generations living upon the earth contemporaneously, having the opportunity of consulting together and profiting each by the knowledge and experience of all. (PP 83.1) MC VC

The advantages enjoyed by men of that age to gain a knowledge of God through His works have never been equaled since. And so far from being an era of religious darkness, that was an age of great light. All the world had opportunity to receive instruction from Adam, and those who feared the Lord had also Christ and angels for their teachers. And they had a silent witness to the truth, in the garden of God, which for so many centuries remained among men. At the cherubim-guarded gate of Paradise the glory of God was revealed, and hither came the first worshipers. Here their altars were reared, and their offerings presented. It was here that Cain and Abel had brought their sacrifices, and God had condescended to communicate with them. (PP 83.2) MC VC