"I [i.e., God] have given you baptism as a gift for the forgiveness of sins, and preach to you unceasingly by word of mouth concerning this treasure, sealing it with the Sacrament of my body and blood, so that you need never doubt. True, it seems little and insignificant that by the washing of water, the Word, and the Sacrament this should all be effected. But don't let your eyes deceive you."

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[Christ's] mission and work it is to help against sin and death, to justify and bring life. He has placed his help in baptism and the Sacrament [i.e., communion/Eucharist/Lord's supper], and incorporated it in the Word and preaching. To our eyes Baptism [capitalized in original] appears to be nothing more than ordinary water, and the Sacrament of Christ's body and blood simple bread and wine, like other bread and wine, and the sermon, hot air from a man's mouth. But we must not trust what our eyes see.

— Martin Luther