When Pony and Jhonny ran away, they go to the church, they made memories, cut each others hair. Pony is made when the church burns down because that was the last place he and Jhonny where together, happy and free. There were kids in the church, so Pony and Jhonny tried to run in and get the kid. Both Jhonny and Pony ended up in the hospital
When Jhonny dies, everybody was sad. He told PonyBoy to "Stay Gold" (Pg. 148) and those where his lasts words. Dally killed himself to be with Jhonny, but PonyBoy Stays Gold, he is true to himself. Everybody is affected by Jhonnys death, he was like a brother. PonyBoy has changed. Jhonny was Ponyboys best friend, they went through many things together, and an event that affects ponyboy is Jhonnys death.
Jhonny Kills Bob to save PonyBoy from drowning. This forces Johnny and PonyBoy to stick together to not be arrested for murder. Their connection becomes stronger because of the socs death. They both run away in result, this pulls them closer together and leads into the church.