St Gregory of Nyssa: It seems good to me to make use of Scripture as a counselor in this matter...

It seems good to me to make use of Scripture as a counselor in this matter. For the divine voice says somewhere in the prophecy of Isaiah, Consider Abraham your father, and Sarah who gave you birth.

Scripture gives this admonition to those who wander outside virtue. Just as at sea those who are carried away from the direction of the harbor bring themselves back on course by a clear sign, upon seeing either a beacon light raised up high or some mountain peak coming into view, in the same way Scripture by the example of Abraham and Sarah may guide again to the harbor of the divine will those adrift on the sea of life 20 with a pilotless mind.

St Gregory of Nyssa 

THE LIFE OF MOSES