At exactly 3:38 of Hunter X Hunter episode 123, there's a bell-like chords and it just sounds so amazing. It is quite short and is only a few seconds but I'm hoping that section is apart of a whole song.
If it is, what's the name of the song?
I get what part you are referring to. I have listened all OSTs and rechecked them before answering this. I think that bell part is all there is to it. You can find all OSTs here > https://soundcloud.com/hunter-x-hunter-ost/sets