Is the bread and wine really the body and blood of Christ?

Furthermore, when we talk about Christ being mystically present in the gifts, in the body and blood of Christ, meaning the bread and the wine, that through obviously a miracle become the actual body and blood of Christ. This is indisputable. If anybody says, well, this is kind of an innovation, or no, we do it in remembrance, or this is what this verse says, or whatever else, you can tell them, listen, go find me a verse, a writing, in the first 500 years, from a church father who is a saint, that teaches this understanding that is found in Protestantism. And you can't find it. I've never seen one quote. I've never seen one quote that says that the body and blood of Christ are not actually present mystically in the gifts.