Acts 10:9-11

Now on the morrow, as they were on their journey, and drew nigh unto the city, Peter went up upon the housetop to pray, about the sixth hour: and he became hungry, and desired to eat: but while they made ready, he fell into a trance; and he beholdeth the heaven opened, and a certain vessel descending, as it were a great sheet, let down by four corners upon the earth