'Thousands' in the Bible

So I chose leaders from your tribes, wise and respected men, and I appointed them over you commanders of thousands, hundreds, fifties, and tens.

but showing gracious love to the thousands of those who love me and keep my commandments.

May the firstborn of his bull be honorable to him, and may his horns be those of a wild ox. With them may he push people all together, to the ends of the earth. These are the myriads of Ephraim and the thousands of Manasseh."