Forty years long was I grieved with this generation, and said, It is a people that do err in their heart, and they have not known my ways:
All Commentaries on Psalms 95:10 Go To Psalms 95
Augustine of Hippo
12. "Forty years long was I very near unto this generation, and said, It is a people that do always err in their hearts; for they have not known My ways" (ver. 10). The forty years have the same meaning as the word "always." For that number forty indicates the fulness of ages, as if the ages were perfected in this number. Hence our Lord fasted forty days, forty days He was tempted in the desert, and forty days He was with His disciples after His resurrection. On the first forty days He showed us temptation, on the latter forty days consolation: since beyond doubt when we are tempted we are consoled. For His body, that is, the Church, must needs suffer temptations in this world: but that Comforter, who said, "Lo, I am with you alway, even unto the end of the world," is not wanting. For this was I with them forty years, to show such a race of men, which alway provoketh Me, even unto the end of the world: because by those forty years He meant to signify the whole of this world's duration.