Psalm 104:20 is the basis of the “Come Holy Spirit” prayer of the Cursillo movement. “Come, Holy Spirit, fill the hearts of the faithful and kindle in us the fire of your love. Send forth your Spirit and we shall be created and you shall renew the face of the earth…” The Spirit filled community (aka the church in all its various forms) is created to renew whatever portion of the face of the earth on which it is found. That means the heart kindled with love seeks to refresh the weary with refuge and replenish the hungry with good things even as we care for “all creatures great and small” and the habitats that support them. So the song we sing to the Lord as long as we live is best expressed when the words of our mouth are confirmed by the work of our hands.