Charles Ellicott Commentary Psalms 50:10

"For every beast of the forest is mine, And the cattle upon a thousand hills." — Psalms 50:10 (ASV)

A thousand hills. —Literally, mountains of a thousand, an expression for which there is no analogy, but which might conceivably mean, “mountains where the cattle are by thousands;” but surely the Septuagint and Vulgate are right here, in rendering “oxen” instead of “a thousand,” and we should read “hills of oxen.”