Clement of Alexandria

Abraham, accordingly, who through hearing believed the voice, which promised under the oak in Mamre, "I will give this land to thee, and to thy seed," was either elect or not. But if he was not, how did he straightway believe, as it were naturally? And if he was elect, their hypothesis is done away with, in as much as even previous to the coming of the Lord an election was found, and that saved: "For it was reckoned to him for righteousness."

And on learning the way of truth, let us walk on the right way, without turning till we attain to what we desire. It was therefore with reason that the king of the Romans (his name was Numa), being a Pythagorean, first of all men, erected a temple to Faith and Peace. "And to Abraham, on believing, righteousness was reckoned."