John 2:22

. ‘When therefore he was raised from the dead his disciple remembered that he had spoken like this, and they believed the Scripture and the word which Jesus had said.'

Although the disciples did not understand the meaning at the time, once Jesus had risen from the dead they remembered what He had said and understood, and it confirmed their faith in both Him and the Scriptures.

‘And they believed the Scripture and the word which Jesus had spoken'. Note that Jesus' words are put on a level with ‘The Scripture'. The one especially in mind may well be Psalms 16:10, ‘you will not abandon me to the grave, nor will you allow your holy one to see decay', although John may have had a number of Scriptures in mind including, among others, Isaiah 53:10; Isaiah 53:12, where resurrection is implied.