'Countless' in the Bible

Are they [self-proclaimed] servants of Christ?—I am speaking as if I were out of my mind—I am more so [for I exceed them]; with far more labors, with far more imprisonments, beaten times without number, and often in danger of death.

So from one man, though he was [physically] as good as dead, were born as many descendants as the stars of heaven in number, and innumerable as the sand on the seashore.

But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels [in festive gathering],