'Forty four' in the Bible

And I heard the number of those sealed, (one hundred and forty four thousands were sealed out of all the tribes of the sons of Israel):

And I saw, and lo, a Lamb having stood upon the mount Sion, and with him an hundred forty-four thousands, having the name of his Father written upon their foreheads;

and they sing, as it were, a new song before the throne, and before the four living creatures, and the elders, and no one was able to learn the song except the hundred forty-four thousands, who have been bought from the earth;

and he measured its wall, an hundred forty-four cubits, the measure of a man, that is, of the messenger;