Suffering in behalf of another seems to have its major impact for good when at least four elements are present. First, the sufferer is pure and worthy. In this sense there was only one completely without blemish, one worthy of suffering spiritually for all others. Second, the cause for which he suffers is just. There is no worthier cause than that for which the Savior suffered, namely, bringing to pass "the immortality and eternal life of man" (Moses 1:39). Third, the recipient knows and loves the sufferer. And fourth, the recipient appreciates the cause for which the suffering occurs. When these four elements simultaneously exist, the chemistry for human behavioral change is explosive.

Tad R. Callister, The Infinite Atonement. 2000. p.217