that ye ... be found of him - “in His sight” [Alford], at His coming; plainly implying a personal coming.
without spot - at the coming marriage feast of the Lamb, in contrast to 2Pe 2:13, “Spots they are and blemishes while they feast,” not having on the King’s pure wedding garment.
in peace - in all its aspects, towards God, your own consciences, and your fellow men, and as its consequence eternal blessedness: “the God of peace” will effect this for you.