It is common to write, "Jesus' disciples."
In general, you make a noun (common or proper) possessive by adding apostrophe and 's':
Mark's desk is near the teacher's desk.
The same applies to common nouns ending with 's'"
This is the boss's office.
When a proper name ends with 's,' usage is divided. Some people prefer apostrophe + s in all cases:
Charles's tie, Jesus's beard, Achilles's heel.
Other people would add only apostrophe in all these cases.
Yet other people would make a distinction with Biblical or classical names:
Charles's tie, Jesus' beard, Achilles' heel.
The singular possessive form of horse is horse's.example: My horse's name is Baxter.
singular possessive: boy'splural possessive: boys'
The possessive form of the singular noun speaker is speaker's.example: What is the speaker's name?
The possessive form of the singular noun roommate is roommate's.Example: My roommate's name is Alex.
The singular possessive form of wife is wife's.Example: My wife's name is Elizabeth.
The possessive form of the singular noun speaker is speaker's.example: What is the speaker's name?
The possessive form for the singular noun host is host's.example: Our host's name is Jonathan.
The possessive form of the singular noun chief is chief's.Example: Our chief's name is Walters.
The possessive form of the singular noun dog is dog's.example: My dog's name is Jack.
The possessive form for the singular noun cow is cow's.example: The cow's name is Pansy.
The possessive form of the singular noun informant is informant's.Example: We can't reveal the informant's name.
The singular form of the noun fairies is fairy.The singular possessive form is fairy's.Example: The fairy's name is Tinkerbell.