Luke 24:37

Startled, and in the utmost alarm, they thought they were looking at a spirit;

Matthew 14:26-27

When the disciples saw Him walking on the waves, they were greatly alarmed. "It is a spirit," they exclaimed, and they cried out with terror.

Mark 6:49-50

They saw Him walking on the water, and thinking that it was a spirit they cried out;

Luke 16:30

"'No, father Abraham,' he pleaded; 'but if some one goes to them from the dead, they will repent.'

Acts 12:15

"You are mad," they said. But she strenuously maintained that it was true. "It is his guardian angel," they said.

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
"'No, father Abraham,' he pleaded; 'but if some one goes to them from the dead, they will repent.'
Matthew 14:26
When the disciples saw Him walking on the waves, they were greatly alarmed. "It is a spirit," they exclaimed, and they cried out with terror.
Mark 6:49
They saw Him walking on the water, and thinking that it was a spirit they cried out;
Acts 12:15
"You are mad," they said. But she strenuously maintained that it was true. "It is his guardian angel," they said.