Hello, DE. I have a copy of the the book 'Rise Up Singing,' which includes the round with words in Hebrew and in English. The book says that the English words are copyright 1962 by Appleseed Music, Inc. It doesn't say anything about a copyright for the Hebrew words or for the melody.

It does say "Hebrew from Hebrew Bible." I think we can assume that part is public domain. :)

It's a good bet that the melody is pd as well.