"THUS, also, service to God does indeed profit God nothing, nor has God need of human obedience; but He grants to those who follow and serve Him life and incorruption and eternal glory, bestowing benefit upon those who serve [Him], because they do serve Him, and on His followers, because they do follow Him; but does not receive any benefit from them: for He is rich, perfect, and in need of nothing. But for this reason does God demand service from men, in order that, since He is good and merciful, He may benefit those who continue in His service. For, as much as God is in want of nothing, so much does man stand in need of fellowship with God. For this is the glory of man, to continue and remain permanently in God's service."
~St. Irenaeus of Lyons: Against the Heresies, 4, 14, 1.
