(19) All these things the Savior thought fit to do, so that, recognizing His bodily acts as works of God, men who were blind to His presence in creation might regain knowledge of the Father. For, as I said before, who that saw His authority over evil spirits and their response to it could doubt that He was, indeed, the Son, the Wisdom and the Power of God? Even the very creation broke silence at His behest and, marvelous to relate, confessed with one voice before the cross, that monument of victory, that He Who suffered thereon in the body was not man only, but Son of God and Savior of all. The sun veiled his face, the earth quaked, the mountains were rent asunder, all men were stricken with awe. These things showed that Christ on the cross was God, and that all creation was His slave and was bearing witness by its fear to the presence of its Master.
Thus, then, God the Word revealed Himself to men through His works. We must next consider the end of His earthly life and the nature of His bodily death. This is, indeed, the very center of our faith, and everywhere you hear men speak of it; by it, too, no less than by His other acts, Christ is revealed as God and Son of God.
Edition opa.patristics.athanasius-of-alexandria.on-the-incarnation.en.