Theis is one of the three great songs of praise in the first chapters of Luke, uttered by
Zechariah, the father of John the Baptist. Zechariah was serving his priestly duty and had been chosen to burn the incense within the sanctuary. While doing so an angel appeared to him and talk him that his barren wife would soon be expecting a child and that he would be a fore-runner of the Messiah. Of course, he should have know better, being a priest and a scholar, after all, but he couldn't restrain himself and he challenged the angel's words. His song of praise indicates that he is healed.
Praise be to the Lord, the God of Israel,
because he has come to his people and redeemed them.
He has raised up a horn of salvation for us
in the house of his servant David
(as he said through his holy prophets of long ago),
salvation from our enemies
and from the hand of all who hate us—
to show mercy to our ancestors
and to remember his holy covenant,
the oath he swore to our father Abraham:
to rescue us from the hand of our enemies,
and to enable us to serve him without fear
in holiness and righteousness before him all our days.
And you, my child, will be called a prophet of the Most High;
for you will go on before the Lord to prepare the way for him,
to give his people the knowledge of salvation
through the forgiveness of their sins,
because of the tender mercy of our God,
by which the rising sun will come to us from heaven
to shine on those living in darkness
and in the shadow of death,
to guide our feet into the path of peace.