Divisions

Paul wrote “Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfectly joined together in the same mind and in the same judgment.” Which rang in my head when I look at our denominations today. Each denomination sees themselves as the ones having the truth of Christ. How do when we don’t agree— we are not of the same mind.

Then I look at other religions which do not know our truth/Christ and each has a united front. Do Muslims have denominations? Buddhist? Or any other religion? I admit I have to research that matter as I don’t see it. Anyone knows?