The scriptures tell us of so many great blessings which await the righteous in the Millenial Day. One of those is that they may be brought to sit down with the great prophets of previous ages. While Alma's generation may have imagined sitting down with Abraham, Isaac, and Jacob, many of our generation have wondered what it would be like to meet the prophet, Joseph Smith, or his successor, Brigham Young. Will we ever get such an opportunity? The Lord reveals to us that the day will come when the righteous will sit down with all the prophets of all ages. This will happen at the great feast of the Lord. Joseph Smith is promised that he will some day drink of the fruit of the vine with the Lord, Moroni, Elias, John, Elijah, Joseph, Jacob, Isaac, Abraham, Adam, Peter, James, and John (DC 27:5-12). In verse DC 27:14, the Lord tells Joseph that he will also drink of the fruit of the vine with all those whom my Father hath given me out of the world. As Alma explains, if our garments are spotless even as their garments are spotless, then we have the right to this great privilege. The privilege to sit with these prophets is not limited to this one time feast but is a privilege of exaltation as evidenced by Hel 3:30 and DC 124:19.
Bruce R. McConkie
"Our Lord's Church is the kingdom of God on earth. Faithful members of that Church, those who adhere to the standards of the kingdom, are the children of the kingdom. (Matt. 13:38.) They are followers or disciples of the Master because they believe the gospel of the kingdom. Special blessings are reserved for them (D. & C. 41:6), and they are commanded to bring forth fruit mete for the Father's kingdom. (D. & C. 84:58-59.) Children of the kingdom eventually 'shall sit down with Abraham, and Isaac, and Jacob, in the kingdom of heaven.' (Matt. 8:11-12.)" (Mormon Doctrine, pp. 126-7)