To
@Lookupnotback and others on the definitions of 'prophecy' and 'prophesy.'
I do not believe that the general understanding of the word 'prophesy' in Old French was to accurately interpret scripture. I won't believe that until someone shows me an overwhelming number of instances of that in Old French and persuades me that there are not numerous counter examples. The Bible was translated into French in the 1550's, which would be Middle French. I suspect they used the word to translate the concept of the Greek word from which 'prophecy' is derived into Old French using the word.
My guess is your lexicographer who came up with the definition actually think that 'prophesy' means to interpret scripture, and he was reading that concept back into scripture. That is a very sloppy understanding of the word, and not very accurate as to how it is used in scripture.
Most of us on a Bible forum would use 'prophesy', 'prophecy' and 'prophet' to refer to the same types of things the Hebrew and Greek words so translated mean in the text of scripture. We might also allow for the fact that there is a 'secular' definition of prophesy, which means to predict the future, which could even be used in a non-religious context.
If you look up references, usually, the verse 'prophesy' in the Old Testament is often used in cases of predictive prophecy. But it is used of utterances spoken as God moved individuals to speak, who spoke words He gave them to speak. Deuteronomy mentions prophesying in the name of the LORD. Not all prophetic utterances are about the future. For genuine prophetic utterances, the unique characteristic of it is described by Peter when he refers to prophecies of times past, "...holy men of old spake as they were moved by the Holy Ghost."
The architypical prophecy in the Old Testament is a first person quote from God that may start, "Thus saith the Lord" in some translations. But not all prophecies conform to this pattern, especially in the Psalms.
Someone prophesying, speaking a message from God on this way, could comment on scripture if that is what God has Him say. But commenting on scripture, 'preaching' or 'teaching' are not prophecy per se. Paul lists prophesying, teaching, exhortation, as different spiritual gifts in Romans 12. There is other evidence along these lines in I Corinthians 12 and Ephesians 4.
Some preachers in the Reformed movement equate prophesying with faithful preaching of the scriptures. They get this from John Calvin, who did not have a very accurate understanding of the term based on his commentaries in I Corinthians, though John Calvin's position on this was rather nuanced. To say that he equated preaching scripture with prophecy would not be accurate. His commentary on I Corinthians chapter 12, I think, or possibly 14, explains his view.