Josh, the 1 Corinthians 14 reference about “all can prophesy” is not addressed to each person in the entire assembly. Reread the passage (vv. 29-32) in context, line by line. Who is Paul talking to in v. 29? “Let the prophets speak…” He is addressing a specific group within the assembly: prophets. Let the prophets speak, only by two or three, and let the other prophets discern. If another prophet has a revelation, the prophet who is speaking should yield. The admonition in v. 31 is that each prophet can prophesy one by one so that all the hearers may learn and be comforted.