Giving tithes

So what is the reference to this verse or verses in the same vein that claim something that is by all accounts testable? That it is a metaphor?

First of all, you have to check the facts and then think about interpretations. The gates of interpretation have not been closed, so I'm not really interested in dealing with it.

Is there no consistent interpretation? Some kind of measure?
If everything is subject to interpretation and there is nothing to deal with, then what is relevant? What are the points to be concerned with when examining things?
Because this motif of do this and that and you will receive this and that is not something rare, like the claim that honoring parents prolongs life... so you are basically saying to remove all of that from the equation?

I don't think so. That's why I keep writing that Bible study is a big waste of time. I'm tired of these empty discussions.

Rabbi Medan has a very beautiful and revolutionary interpretation of this verse.
You should listen.

The day the Bible was signed - OK, can you just be specific about the video or article in which he talks about it?

I think here
https://www.hatanakh.com/lessons/%D7%9E%D7%93%D7%95%D7%A2-%D7%A4%D7%A1%D7%A7%D7%94-%D7%94%D7%A0%D7%91%D7%95%D7%90%D7%94-%D7%9E%D7%99%D7%A9%D7%A8%D7%90%D7%9C