Luke 24:37

But they became frightened and [even] terrified, and assumed they were seeing a spirit.

Matthew 14:26-27

When the disciples saw Him walking on the water they became frightened, saying, "It is a spirit!" and cried out with fear.

Mark 6:49-50

But when they saw Him walking on the water they thought it was a spirit, so shouted out,

Luke 16:30

Then the rich man said, 'No, forefather Abraham, but if someone goes to them from the dead, [then] they will repent [i.e., change their hearts and lives].'

Acts 12:15

And they said to her, "You are crazy." But she insisted that [what she reported] was true. They replied, "It is [only] his angel."

Treasury of Scripture Knowledge

Summary

But they were terrified and affrighted, and supposed that they had seen a spirit.

Bible References

General references

Luke 16:30
Then the rich man said, 'No, forefather Abraham, but if someone goes to them from the dead, [then] they will repent [i.e., change their hearts and lives].'
Matthew 14:26
When the disciples saw Him walking on the water they became frightened, saying, "It is a spirit!" and cried out with fear.
Mark 6:49
But when they saw Him walking on the water they thought it was a spirit, so shouted out,
Acts 12:15
And they said to her, "You are crazy." But she insisted that [what she reported] was true. They replied, "It is [only] his angel."