Irenaeus Against Heresies Book IV ) is come. Wherefore let him that thinketh he standeth, take heed lest he fall."[390] Clement of Alexandria Stromata Book VII For I would not have you to be ignorant, brethren," says the apostle, "that all were under the cloud, and partook of spiritual meat and drink; "[175] Origen Against Celsus Book IV And again, in another place: "We know that all our fathers were under the cloud, and all passed through the sea; and were all baptized unto Moses in the cloud, and in the sea."[232] Cyprian Epistle LXXV And that that sea was a sacrament of baptism, the blessed Apostle Paul declares, saying, "Brethren, I would not have you ignorant how that all our fathers were under the cloud, and all passed through the sea, and were all baptized unto Moses in the cloud and in the sea; "and he added, saying, "Now all these things were our examples."[34] Cyprian Treatise XII Three Books of Testimonies Against the Jews Likewise in the first Epistle of Paul to the Corinthians: "Brethren, I would not that ye should be ignorant, that all our fathers were under the cloud."[32]