And you shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.
All Commentaries on Exodus 12:6 Go To Exodus 12
Jerome
AD 420
Why is this lamb offered up in the evening and not during the day? The reason is plain enough, for our Lord and Savior suffered his passion at the close of the ages. So John says in his letter: “Dear children, it is the last hour.” Since, moreover, it is the last hour, it is the beginning of night, for day has come to an end. It must be understood, however, that as long as we are in this world, as long as we abide in Egypt, we are not in a clear light but in a dark mist. Although the church shines as the moon in the nighttime, nevertheless we cannot yet dwell in the full splendor of the true sun.