Acts 10:12 (KJV)

And when the angel which spake unto Cornelius was departed, he called two of his household servants, and a devout soldier of them that waited on him continually;

And when he had declared all these things unto them, he sent them to Joppa.

On the morrow, as they went on their journey, and drew nigh unto the city, Peter went up upon the housetop to pray about the sixth hour:

And he became very hungry, and would have eaten: but while they made ready, he fell into a trance,

And saw heaven opened, and a certain vessel descending upon him, as it had been a great sheet knit at the four corners, and let down to the earth:

And there came a voice to him, Rise, Peter; kill, and eat.

But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.

And the voice spake unto him again the second time, What God hath cleansed, that call not thou common.

This was done thrice: and the vessel was received up again into heaven.

Now while Peter doubted in himself what this vision which he had seen should mean, behold, the men which were sent from Cornelius had made enquiry for Simon's house, and stood before the gate,