28 He stretched out His hands on the Cross, that He might embrace the ends of the world; for this Golgotha is the very centre of the earth. It is not my word, but it is a prophet who has said, You have wrought salvation in the midst of the earth. He stretched forth human hands, who by His spiritual hands had established the heaven; and they were fastened with nails, that His manhood, which here the sins of men, having been nailed to the tree, and having died, sin might die with it, and we might rise again in righteousness. For since by one man came death, by One Man came also life; by One Man, the Saviour, dying of His own accord: for remember what He said, I have power to lay down My life, and I have power to take it again.
Source: Catechetical Lectures (New Advent)