'Object' in the Bible

He saw heaven opened and an object something like a large sheet descending, being let down to earth by its four corners.

This happened three times, and immediately the object was taken up into heaven.

"I was in the city of Joppa praying, and in a trance I saw a vision, an object something like a large sheet descending, being let down from heaven by its four corners, and it came to me.