'Myriads' in the Bible

and he saith: -- 'Jehovah from Sinai hath come, And hath risen from Seir for them; He hath shone from mount Paran, And hath come with myriads of holy ones; At His right hand are springs for them.

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."