Irenaeus Against Heresies Book II And, for this reason, the Lord declared to those who showed themselves ungrateful towards Him: "If ye have not been faithful in that which is little, who will give you that which is great? "[308] Tertullian Against Marcion Book IV Accordingly, this will throw light upon the sense in which it was said, "If ye have not been faithful in the unrighteous mammon, who will commit to your trust the true riches? "[1303] Cyprian Treatise VIII On Works and Alms He also, in another place, calls laborious and fruitful men faithful; but He denies faith to unfruitful and barren ones, saying, "If ye have not been faithful in the unrighteous mammon, who will commit to you that which is true? And if ye have not been faithful in that which is another man's, who shall give you that which is your own? "[28]