They are like a dream when one awakes; when you arise, Lord, you will despise them as fantasies.
NIV
As a dream [which seems real] until one awakens, so, O Lord, when You arouse Yourself [to take note of the wicked], You will despise their outward show.
AMP
As a dream when one awaketh; so, O Lord, when thou awakest, thou shalt despise their image.
KJV