'Forty four' in the Bible

And I heard the number of those who were sealed, one hundred and forty-four thousand sealed from every tribe of the sons of Israel:

Then I looked, and behold, the Lamb was standing on Mount Zion, and with him a hundred and forty-four thousand who had his name and his Father's name written on their foreheads.

And they sang a new song before the throne and before the four living creatures and before the elders. No one could learn the song except the hundred and forty-four thousand who had been redeemed from the earth.

He also measured its wall, a hundred and forty-four cubits by a man's measure, which is also an angel's.