The phrase "authority differ" is not correct in English.
Did you mean "authorities differ"? You can use the corrected phrase when discussing how different authorities or organizations may have varying opinions or interpretations on a particular issue.
Example: "When it comes to environmental regulations, authorities differ significantly on the best practices to implement."
Alternatives: "authorities vary" or "authorities disagree".
There are certainly verses which enjoin Muslims to obey God, the Prophet and the "holders of authority" (ulu' l-amr) but opinion on the meaning of the term' authority' differ.
The last four chapters of the letter, a sharp and vigorous defense of Paul's apostolic authority, differ markedly in tone from the earlier chapters, suggesting that chapters 10 13 may have been written earlier, before Paul had received Titus' message.
Why, if I have been raising empowered daughters, would they not question my authority, differ from my perspective, and even disobey me at times.
Please note that approval authority differs from signature authority.
The law regulating the internal aspects of administration (e.g., relations between the government and its officials, a local authority and its committees, or a central department and a local authority) differs from that covering external relations (those between the administration and private persons or interests).
Authorities differ as to the number of species, since garter snakes show only slight differences in their scales but considerable geographic differences in coloration.
Orthodox Jewish religious authorities differ on the location of the Holy of Holies.
(It is not germane in this instance, but some authorities differ with Rabbi Weinreb about cosmetics).
Authorities differ widely over the number of species the genus includes.
Because of ambiguities in state law, local groundwater authorities differ in whether they require companies to get permits for water wells drilled to supply frackers.
The ECB complained that "the commitments outlined by the [Greek] authorities differ from existing programme commitments … We will have to assess whether measures that are not accepted by the authorities are replaced with measures of equal or better quality".
