In Matthew 14:26, the disciples also mistake Jesus for a ghost when he walks on water — identical fear and assumption of a spirit.

In Mark 6:49, the disciples think Jesus is a ghost and cry out — the same mistaken identity and terror.

In Revelation 1:17, John falls in fear before the glorified Christ — parallel to the disciples' terror at seeing the risen Jesus.

In Acts 12:15, the believers think Peter's angel is at the door — another case of mistaking a living person for a spirit.