And God saw everything that he had made, and, behold, it was very good. And the evening and the morning were the sixth day.
All Commentaries on Genesis 1:31 Go To Genesis 1
Augustine of Hippo
Sacred Scripture commends the perfection of the number six to us especially in this, that God completed his works in six days and made man in the image of God on the sixth day. And the Son of God came in the sixth age of the human race and was made the Son of man, in order to reform us in the image of God. This is the age in which we are at present, whether a thousand years are assigned to each age or whether we settle upon memorable and notable personages as turning points of time. Thus the first age is found from Adam to Noah, the second from that time to Abraham, and after that … from Abraham to David, from David to the carrying away to Babylon, and from then to the birth of the Virgin. These three ages added to those make five. Hence the birth of the Lord inaugurated the sixth age, which is now in progress up to the hidden end of time. .