Entering into God's rest -- Joseph Smith's quote

“… God has in reserve a time, or period appointed in His own bosom, when He will bring all His subjects, who have obeyed His voice and kept His commandments, into His celestial rest. This rest is of such perfection and glory, that man has need of a preparation before he can, according to the laws of that kingdom, enter it and enjoy its blessings. This being the fact, God has given certain laws to the human family, which, if observed, are sufficient to prepare them to inherit this rest. This, then, we conclude, was the purpose of God in giving His laws to us. … All the commandments contained in the law of the Lord, have the sure promise annexed of a reward to all who obey, predicated upon the fact that they are really the promises of a Being who cannot lie, One who is abundantly able to fulfill every tittle of His word.” --Joseph Smith, 1834