Charles H. Spurgeon on Psalms 126:1

We were like them that dream. Here you may observe that God doth often send succour and deliverance to the godly in the time of their affliction, distress, and adversity; that many times they themselves do doubt of the truth thereof, and think that in very deed they are not delivered, but rather that they have dreamed. Peter, being imprisoned by Herod, when he was delivered by an angel, for all the light that did shine in the prison; though the angel did smite him on the side and raised him up; though he caused the chains to fall off his hands; though he spake to him three several times, Surge, einge, circunda;"Arise quickly, gird thyself, and cast thy garment about thee"; though he conducted him safely by the watches; and though he caused the iron gates to open willingly; yet for all this he was like unto them that dream. "For he wist not that it was true which was done by the angel; but thought he saw a vision": Ac 11:9. When old Jacob was told by his sons that his son Joseph was alive, his heart failed, and he believed them not; but when he had heard all that Joseph had said, and when he saw the chariots that Joseph had sent, then, as it were, raised from a sleep, and awakened from a dream, his spirit revived, and, rejoicing, he cried out, "I have enough; Joseph my son is yet alive." Lorinus seems to excuse this their distrust, because they were so over ravished with joy, that they misdoubted the true cause of their joy: like the Apostles, who having Christ after his resurrection standing before them, they were so exceedingly joyed, that rejoicing they wondered and doubted; and like the two Marys, when the angel told them of our Saviour Christ's resurrection, they returned from the sepulchre rejoicing, and yet withal fearing. It may be they feared the truth of so glad news, and doubted lest they were deceived by some apparition. —John Hume