John often echoes the language of the Old Testament in writing out his visions. But he does not point the reader to specific Old Testament texts. We will understand his meaning only by going back to the Old Testament and digging out the echo in its original context.
Here's how echoes work: What is a lemon? Well, it certainly is a citrus fruit with a fairly sour taste. But the term has an extended meaning in American culture. A lemon is a new car that doesn't deliver on its promise. While it may be brand-new, it gives its owner far too many troubles and spends much too much time in the repair shop.
Now, if you live in the United States, you are familiar with this symbolic use of "lemon." In the context of automobiles, a lemon is a bad new car. But you are probably not aware of how this meaning became popular. About 35 years ago Ralph Nader published a book entitled What to Do With Your Bad Car. The cover of the book had a picture on it of a lemon with four plastic wheels. Reading the title and then seeing the photo had immediate impact. "Lemon" as a symbol with automotive connotations became widespread.
But most Americans don't need to know that piece of history to understand the extended meaning on "lemon." You pick up that piece of information "in the air" of American culture. And if you are writing or talking about lemons, your audience would automatically understand, whether or not they have ever heard of Ralph Nader.
The seven bowls of wrath are a terrifying piece of Revelation's legacy to the world. Along with the seven trumpets, they pile up images of suffering, assault, and unrepentance. But "in the air" of John's Jewish world, bowls would have had a strangely positive ring. The word for "bowls" appears repeatedly in texts describing the implements of the sanctuary in the Old Testament (Ex. 27:3; 38:3; Num. 4:14; 2 Kings 25:14, 15; 2 Chron. 4:8, 22). They are also mentioned in Revelation 5:8 as containing the prayers of the saints. When the wrath of God strikes the earth, He will still be listening to the prayers of His people.
Lord, in the midst of tragedy I want to pray all the more, to link up with You in Your purpose to save everyone. You can, while limiting the sorrow and the dying. Give me a heart to act as Your agent of mercy in the world, one person at a time.