Well, clearly.
Notably, throughout the Bible, OT & NT alike, g_d commands his followers to wage merciless war on unbelievers (Deuteronomy 13:8, Deuteronomy 20:16, Exodus 20:23-25, Numbers 31:17-18, Luke 22:36, Matthew 10:34, etcetera).
So, to be a true Christian, one must be waging merciless war on unbelievers.
*checks notes*
Oh, many are
NEVERMIND