Also know as the stevebucky holy grail, this phrase commonly refers to the iconic fan fiction series "Not Easily Conquered" or "NEC" by dropdeaddream and WhatAreFears on AO3, focusing on the pairing of Steve Rogers (Captain America) and Bucky Barnes (The Winter Soldier) from the Marvel Cinematic Universe. The 3 installments (A Long Winter, The Thirteen Letters, Not Easily Conquered) cover an alternate timeline for the characters where Bucky had written love letters to Steve, and has become well known in the fandom for its beautiful prose, gathering its own sub-fandom.
Person A: I've never read NEC.
Person B: How could you not? It's the stevebucky bible!

Person A: 'I know when to walk away from a fight and trying my damnedest not to need him was a losing battle.'
Person B: Where's that from?
Person A: 'So how long have I loved you for? womb to tomb, sweetheart. since before I was even here at all.'
Person B: Oh, of course!!! The stevebucky bible!
by ilovedyoufirst February 2, 2021
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