Traditionally, a fifth cup of wine is left out for the Prophet Elijah. Jews await his return because he will be a forerunner for the coming of the Messiah. But we know that the Prophet Elijah has in fact come in our day to aid in the restoration of temple covenants and the sealing ordinance. President Henry B. Eyring explained

Centuries ago, the prophet Malachi said that in a coming day, God would send Elijah to “turn the heart of the fathers to the children, and the heart of the children to their fathers” (Malachi 4:6).

This prophecy was so important the Savior quoted it when He visited the Americas after His Resurrection (see 3 Nephi 25:5–6). And when the angel Moroni visited the Prophet Joseph Smith, he too quoted the prophecy about Elijah and hearts, fathers, and children (see Joseph Smith—History 1:36–39).

Today is April 1. Two days from now, April 3, marks 181 years from the day when Malachi’s prophecy was fulfilled. On that day, Elijah did come, and he gave to Joseph Smith the priesthood power to seal families eternally (see D&C 110:13–16).

From that day to this, interest in exploring one’s family history has grown exponentially. At ever-increasing rates, people seem drawn to their ancestry with more than just casual curiosity. Genealogical libraries, associations, and technologies have emerged around the world to support this interest. The internet’s power to enhance communications has enabled families to work together to do family history research with a speed and thoroughness never before possible.

haggadah Section: Nirtzah