'Forty four' in the Bible

And I heard the number of those who were marked with the seal, one hundred and forty-four thousand. Those that were marked with the seal were from every tribe of the children of Israel:

Then I looked, and there the Lamb was standing on Mount Zion, and with Him one hundred and forty-four thousand people who had His name and the name of His Father written on their foreheads.

They were singing a new song before the throne, the four living creatures, and the elders, and no one could learn the song except the hundred and forty-four thousand who had been redeemed from the earth.