'Rivalry' in the Bible

In writing this much, brethren, with special reference to Apollos and myself, I have done so for your sakes, in order to teach you by our example what those words mean, which say, "Nothing beyond what is written!" --so that you may cease to take sides in boastful rivalry, for one teacher against another.

while the others proclaim Him from motives of rivalry, and insincerely, supposing that by this they are embittering my imprisonment.

But if in your hearts you have bitter feelings of envy and rivalry, do not speak boastfully and falsely, in defiance of the truth.

For where envy and rivalry are, there also are unrest and every vile deed.