At the conference of the Church held in Nauvoo, October 2nd to 5th, 1841, the Prophet made this announcement: "There shall be no more baptisms for the dead, until the ordinance can be attended to in the Lord's House; and the Church shall not hold another General Conference, until they can meet in said house. _For thus saith the Lord!_" The reason for this announcement was that the temple had progressed so far that the font in the basement had been prepared for this ordinance, therefore, baptisms for the dead could no longer be performed in the river.
One month later, November 8, 1841, the baptismal font in the temple was dedicated. President Brigham Young was spokesman. The font is described as being situated in the center of the basement room, under the main hall of the temple. It was constructed of pine timber, and put together of staves tongued and grooved, oval shaped, sixteen feet long east and west, and twelve feet wide, seven feet high from the foundation, the basin four feet deep, the moulding of the cap and base were formed of beautiful carved work. It stood upon twelve oxen, four on each side, and two at each end, their heads, shoulders, and fore legs projecting out from under the font. The oxen and ornamental mouldings were carved by Elder Elijah Fordham, which took him eight months to finish. This font was replaced later by a permanent font which was more durable.
Sunday, November 21, 1841, the twelve met in council at President Brigham Young's house, and at four o'clock they repaired to the baptismal font in the temple, where President Brigham Young, Elders Heber C. Kimball and John Taylor baptized about forty persons for their dead. Elders Willard Richards, Wilford Woodruff and George A. Smith, confirmed them. These were the first baptisms for the dead in the font in the Lord's House. From this time forth, as long as the Saints remained in Nauvoo, baptisms for the dead were performed in the temple.
Sunday, August 7, 1841, Don Carlos Smith, the youngest brother of the Prophet, died in Nauvoo. He was only twenty-six years of age, and was one of the first to receive the testimony of the Prophet. He received the Priesthood when but fourteen years of age, and in 1836 was made president of the high priests' quorum. He was on a mission in Tennessee and Kentucky in 1838. During his absence in the midst of winter his wife was driven from her home which was burned, and she was forced to wade Grand River with her two little children. In Kirtland he labored in the office of Oliver Cowdery and learned the art of printing. In the flight of his father's family from Missouri in the winter of 1839, he took charge, and saw them removed to Quincy, Illinois. In June, 1839, he commenced making preparations for printing the _Times and Seasons_, a periodical published in Nauvoo. The press and type had been rescued by Elias Smith, Hyrum Clark and others, from Dawson's yard in Far West, where it had been buried the night that place was besieged by the mob-militia under General Lucas. The _Times and Seasons_ was issued by Don Carlos Smith and Ebenezer Robinson, the first number appearing in November, 1839. At the time of his death the editors were Don Carlos Smith and Robert B. Thompson. Don Carlos was six feet four inches tall, was very straight, strong and active. The Prophet said of him: "I never knew any fault in him; I never saw the first immoral act, or the first irreligious or ignoble disposition in the child from the time he was born until the time of his death. He was a lovely, a good-natured, a kind-hearted, and a virtuous and faithful, upright child; and where his soul goes, let mine go also."