'Blessed' in the Bible

So Jethro said, “Blessed be the Lord who delivered you from the hand of the Egyptians and from the hand of Pharaoh, and who delivered the people from under the hand of the Egyptians.

For in six days the Lord made the heavens and the earth, the sea and all that is in them, and rested on the seventh day; therefore the Lord blessed the sabbath day and made it holy.

And Moses examined all the work and behold, they had done it; just as the Lord had commanded, this they had done. So Moses blessed them.