Luke 24:37

and they being terrified and afraid, thought they saw a spirit.

Matthew 14:26-27

And when the disciples saw him walking on the lake, they were troubled and said, It is an apparition; and they cried out for fear.

Mark 6:49-50

And seeing him walking on the lake, they thought it was an apparition, and cried out,

Luke 16:30

But he said, No, father Abraham, but if one went to them from the dead they would change their minds.

Acts 12:15

But they said to her, You are mad. But she asserted strongly that it was so. And they said, It is 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
But he said, No, father Abraham, but if one went to them from the dead they would change their minds.
Matthew 14:26
And when the disciples saw him walking on the lake, they were troubled and said, It is an apparition; and they cried out for fear.
Mark 6:49
And seeing him walking on the lake, they thought it was an apparition, and cried out,
Acts 12:15
But they said to her, You are mad. But she asserted strongly that it was so. And they said, It is his angel.