When was the book of psalms made?

Answer 1

King David published a psalm book about 1000 B.C. He wrote some, collected some, and modified some. These are listed in the Book of Psalms as Psalms of David. Other groups of Psalms were added to David's book. You can see the names listed for a number of Psalms. Many do not have anyone listed. One Psalm begins, "By the waters of Babylon, we cried." That one was written about 550 B.C., during the Babylonian Captivity. That is the last Psalm that can be given a definite date. The Book of Psalms had become a part of the Bible before Alexander the great conquered the Middle East. So it was complete about 350 B.C.