President Wilford Woodruff (1807–98) testified:

“When we get to the other side of the veil, we shall know something. We now work by faith. We have the evidence of things not seen. The resurrection, the eternal judgment, the celestial kingdom, and the great blessings that God has given in the holy anointings and endowment in the temples, are all for the future, and they will be fulfilled, for they are eternal truths. We will never while in the flesh, with this veil over us, fully comprehend that which lies before us in the world to come. It will pay any man to serve God and to keep His commandments the few days he lives upon the earth” (Teachings of Presidents of the Church: Wilford Woodruff[2004], 154).