'Forty four' in the Bible

And I heard what was the number of the sealed ??a hundred and forty-four thousand sealed from every tribe of the sons of Israel,

Then I looked, and there was the Lamb standing on mount Sion, and along with him a hundred and forty-four thousand bearing his name and the name of his Father written on their foreheads!

they were singing a new song before the throne and before the four living Creatures and the Presbyters, and no one could learn that song except the hundred and forty-four thousand who had been ransomed from earth.