Come, eat ye of my bread. Wisdom now directly addresses the simple and the foolish (comp. Revelation 22:17). And drink of the wine which I have mingled (see on Proverbs 9:2). Bread and wine represent all needful nourishment, as flesh and wine in Proverbs 9:2.
So Christ says (John 6:51), "I am the living Bread which came down from heaven … and the bread that I will give is my flesh, which I will give for the life of the world." Compare the invitation in Isaiah 55:1, "He, every one that thirsteth!"
etc. The Fathers see here a prophecy of the gospel feast, wherein Christ gave and gives bread and wine as symbols of his presence (Matthew 26:26, etc.).