President Gordon B. Hinckley taught that “missionaries have a responsibility to those they baptize to help them be ‘faithful and true, dyed-in-the-wool Latter-day Saints, with a conviction in their hearts concerning the truth of this great work … .
“‘Do all you can to see that those whom you baptize are not baptisms only but solid true converts to this Church who will remain so … .
“‘The Book of Mormon speaks of missionaries who taught so faithfully and so well that those they baptized never did fall away. … Now that ought to be our standard and our motto … .
“‘I don’t believe there is any reason why a convert to this Church should leave again in a short time’” (“Bring in Solid Converts; Help Them Remain”).