Orson Pratt discusses enduring to the end after being sealed.
Orson Pratt, "Progress of the Work," in Journal of Discourses (Liverpool : F. D. Richards, 1855), 2:260
But we have no promise, unless we endure in faith unto the end; whether we live few or many years upon the earth, we must endure through all the trials, tribulations, difficulties, and persecutions which the Lord sees fit in His infinite wisdom to cause us, as individuals, or as a people, to wade through; we must endure them, and hold steadfast to the faith, if we would inherit the crowns of eternal lives that are promised to the faithful. In speaking of this, I will qualify my language by saying, that the Saint who has been sealed unto eternal life and falls into transgression and does not repent, but dies in his sin, will be afflicted and tormented after he leaves this veil of tears until the day of redemption; but having been sealed with the spirit of promise through the ordinances of the house of God, those things which have been sealed upon his head will be realized by him in the morning of the resurrection. But it is my desire and my constant prayer that I may so live, that when I depart from this life—when I lay down this mortal body (if I am called upon to lay it down before the coming of our Lord), I may enter into the paradise of rest, and not only conquer Satan, and have power over him here, but have power over him and all his hosts hereafter. These are my feelings, these are my desires, and this is my prayer.