Ezra 6:22

and kept the Feast of Unleavened Bread seven days with joy; for this festival was merely a continuation of the Passover Feast; for the Lord had made them joyful, and turned the heart of the king of Assyria, of the Chaldean king, unto them to strengthen their hands in the work of the house of God, the God of Israel. They were enjoying peace and prosperity and were duly grateful to the Lord, the Giver of all good gifts, for His rich blessings. It is ever a source of joy for the children of God to be privileged to sacrifice prayer and thanksgiving to God, this attitude of mind being further stimulated when they see that God establishes the work of their hands, that the building of His kingdom is carried on successfully.