On the floor, the final will in red-black writing was "jn424"-- one not of Christian faith might think this to be a secret message of unknown meaning. But to Kirei, who had inherited Risei's pious faith, the significance of this cipher was very obvious.

John 4:24. Without missing a word, Kirei recited those holy words stored in his memory.

"God is spirit, and his worshipers must worship in spirit and in truth——"

- Fate/Zero: Act 11, Part 2