'Myriads' in the Bible

In those times, the myriads of the crowd being gathered together, so that they trod one on another, he began to say to his disciples first, Beware of the leaven of the Pharisees, which is hypocrisy;

And they having heard it glorified God, and said to him, Thou seest, brother, how many myriads there are of the Jews who have believed, and all are zealous of the law.

but ye have come to mount Zion; and to the city of the living God, heavenly Jerusalem; and to myriads of angels,

And Enoch, the seventh from Adam, prophesied also as to these, saying, Behold, the Lord has come amidst his holy myriads,