So our own earliest records tell us that it was on the morning of Saturday, of what is now the nineteenth of December, that the little exploring party from the _Mayflower_, then lying at her anchor in Provincetown Harbor, after a day and night of much trouble and danger, sorely buffeted by wind and wave in rough New England's December seas, found themselves on an island in Plymouth Bay. It was a mild, "faire sunshining day. And this being the last day of the weeke, they prepared ther to keepe the Sabath. On Munday they sounded the harbor, and marched into the land, and found a place fitt for situation. So they returned to their shipp againe [at Provincetown] with this news. On the twenty-fifth of December they weyed anchor to goe to the place they had discovered, and came within two leagues of it, but were faine to bear up againe; but the twenty-sixth day, the winde came faire, and they arrived safe in this harbor. And after wards tooke better view of the place, and resolved wher to pitch their dwelling; and the fourth day [of January] begane to erecte the first house for commone use to receive them and their goods." Such, in the quaint language of Bradford, is the calendar of New England's Passover; and, beginning on the nineteenth of December, it ends on the fourth of January, covering as nearly as may be the Christmas holyday period. Is there any better use to which the Passover anniversary can be put than to retrospection? "And when your children shall say unto you, What mean you by this service? ye shall say, It is the sacrifice of the Lord's passover, when he smote the Egyptians, and delivered our houses." So the old story is told again, being thus kept ever green in memory; and, in telling it, the experiences of the past are brought insensibly to bear on the conditions of the present. Thus, once a year, like the Israelites of old, we, as a people, may take our bearings and verify our course, as we plunge on out of the infinite past into the unknowable future. It is a useful practice; and we are here this first evening of our Passover period to observe it.