Why is it important that as Christians we have discussions (even intense ones) with one another about God, the Bible, truth, and so forth?
The Bible says concerning Paul:
But when divers [some] were hardened, and believed not, but spake evil of that way before the multitude, he departed from them, and separated the disciples, disputing* daily in the school of one Tyrannus (Acts 19:9, KJV)
* disputing: (“getting a conclusion across”) occurs 13 times in the NT, usually of believers exercising “dialectical reasoning.” This is the process of giving and receiving information with someone to reach deeper understanding – a “going back-and-forth” of thoughts and ideas so people can better know the Lord (His word, will). Doing this is perhaps the most telling characteristic of the growing Christian! (HELPS Word-studies, Biblehub.com) (Strongs 1256 /dialégomai)