Steve Ray has a list of more than 35 loaded Questions for "Bible Christians" (quotation marks his)(link to the whole list). I originally planned to respond to just 35 of them, but the series seems to have been of interest, so in this extension, I'm responding to three more numbered questions in his list, plus fourteen "bonus questions" that take the form "Where does the Bible say ... ." I'm trying to provide the answers in the same common format as the original series, for easy reference. This is number 15/17.
Where does the Bible . . .
. . . that the church should, or someday would be divided into competing and disagreeing denominations?
1) The Bible doesn't use the term "denominations."
2) The Bible does declare that Christ came to bring division.
Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division: for from henceforth there shall be five in one house divided, three against two, and two against three. The father shall be divided against the son, and the son against the father; the mother against the daughter, and the daughter against the mother; the mother in law against her daughter in law, and the daughter in law against her mother in law.
1) The existence of some divisions is natural. People who speak different languages must necessarily worship separately. Scripture teaches us that the prayers and singing should be in a language understood by the congregants.
1 Corinthians 14:15 What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.
2) The existence of some divisions is desirable from the standpoint of the spread of the gospel.
So when they were dismissed, they came to Antioch: and when they had gathered the multitude together, they delivered the epistle: which when they had read, they rejoiced for the consolation. And Judas and Silas, being prophets also themselves, exhorted the brethren with many words, and confirmed them. And after they had tarried there a space, they were let go in peace from the brethren unto the apostles. Notwithstanding it pleased Silas to abide there still. Paul also and Barnabas continued in Antioch, teaching and preaching the word of the Lord, with many others also. And some days after Paul said unto Barnabas, Let us go again and visit our brethren in every city where we have preached the word of the Lord, and see how they do. And Barnabas determined to take with them John, whose surname was Mark. But Paul thought not good to take him with them, who departed from them from Pamphylia, and went not with them to the work. And the contention was so sharp between them, that they departed asunder one from the other: and so Barnabas took Mark, and sailed unto Cyprus; and Paul chose Silas, and departed, being recommended by the brethren unto the grace of God. And he went through Syria and Cilicia, confirming the churches.
3) The existence of some divisions is necessary because of false teaching.
Romans 16:17 Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.
4) The existence of some divisions is undesirable, particularly within a local church:
1 Corinthians 1:10 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.
1 Corinthians 3:3 For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?
1 Corinthians 11:18 For first of all, when ye come together in the church, I hear that there be divisions among you; and I partly believe it.
Notice that these undesirable divisions are all within a local church. The people are coming together to worship in the same place, but there are divisions or cliques among the people.