Now the commemoration of the passion that takes place daily on the altar in the offering of this sacrifice is signified by the perpetual sacrifice that was made at morning and evening. In the morning for the grace of strength, since in this life we require it in the morning that we may merit, but in the evening in dangerous weakness, since then we need the sacrament for viaticum. Both of these are spoken of in Psalm 141.2, "Let my prayer be directed as" -- supply "morning" -- "incense in your sight; the lifting up of my hand" -- supply "in the commendation of [my] soul" -- "as the evening sacrifice." [Eccl 11.6] "In the morning sow your seed, and in the evening let not your hand cease; for you know not which may rather spring up, this or that: and if both together, it shall be better."
[Albert the Great, On the Body of the Lord, Surmanski, tr., The Catholic University of America Press (Washington, DC: 2017.]
