Wherefore also Moses says, “Show thyself to me”—intimating most clearly that God is not capable of being taught by man, or expressed in speech, but to be known only by His own power. For inquiry was obscure and dim; but the grace of knowledge is from Him by the Son. Most clearly Solomon shall testify to us, speaking thus: “The prudence of man is not in me: but God giveth me wisdom, and I know holy things.” Now Moses, describing allegorically the divine prudence, called it the tree of life planted in Paradise; which Paradise may be the world in which all things proceeding from creation grow. In it also the Word blossomed and bore fruit, being “made flesh,” and gave life to those “who had tasted of His graciousness;” since it was not without the wood of the tree that He came to our knowledge. For our life was hung on it, in order that we might believe. And Solomon again says: “She is a tree of immortality to those who take hold of her.” “Behold, I set before thy face life and death, to love the Lord thy God, and to walk in His ways, and hear His voice, and trust in life. But if ye transgress the statutes and the judgments which I have given you, ye shall be destroyed with destruction. For this is life, and the length of thy days, to love the Lord thy God.”