Jerome Comes Home is the third side mission in Far Cry: New Dawn. You can get it while you are in Prosperity or during your exploration of Hope County.
The mission starts in Ramone's Lookout. Eliminate the enemies and then approach the man. He tells you that Pastor Jerome has been kidnapped. The man will mark the place for you.
Go there. You reach a destroyed convoy. There is a note here - it informs you that the Pastor was taken to the nearby base. You won't have problems getting there. The entrance from the direction of where the kidnapping happened isn't guarded. You can approach the truck unnoticed. Hurry up. If you don't open the trailer in time, the truck will start moving towards Rye & Daughter Aviation. You can chase the vehicle if you have a fast car. Catch up with the truck and kill its driver.
If you fail to catch the truck while it is still moving towards another camp, you will have to fight. This outpost has better protection than the previous one. The best place to attack is the half-dug container. Only two bandits are near that spot. The rest will have to regroup, giving you enough time to attack.
Defeat all enemies and then go to Jerome. Besides him, you will find another three hostages. Release them and then speak with the Pastor. This ends the mission. Pastor Jerome is now available as one of the guns for hire.