The apostles were promised the Spirit of truth who would bring to their remembrance what Christ had said (John 14:26) and guide them into "all truth" (John 16:13).
Ipinangako sa mga apostol ang Banal na Espiritu na siyang magpapaalala sa kanila ng mga sinabi ni Kristo (Juan 14:26) upang gabayan sila sa "lahat ng katotohanan" (Juan 16:13).