For David called on the Lord, the Most High and He gave strength to his right arm to strike down a mighty warrior and to exalt the power of his people. –Sirach 47:5 Image Courtesy: Chabad.org
David
As the fat is set apart from the offering of well-being
so David was set apart from the Israelites.
He (David) played with lions as though they were young goats
and with bears as though they were lambs of the flock.
In his youth did he not kill a giant
and take away the people’s disgrace
when he whirled the stone in the sling
and struck down the boasting Goliath?
For he (David) called on the Lord, the Most High
and He (Almighty God) gave strength to his right arm
to strike down a mighty warrior
and to exalt the power of his people.
So they glorified him (David) for the tens of thousands he conquered
and praised him for the blessings bestowed by the Lord,
when the glorious diadem was given to him.
For he wiped out the enemies on every side
and annihilated his adversaries the Philistines,
he crushed their power to our own day.
In all that he (David) did he gave Thanks
to the Holy One, the Most High (Almighty God) proclaiming His glory,
he sang praises with all his heart
and he loved his Maker.
He placed singers before the altar
to make sweet melody with their voices.
He gave beauty to the festivals
and arranged their times throughout the year,
while they praised God’s Holy name
and the Sanctuary resounded from early morning.
The Lord took away his (David’s) sins
and exalted his power forever;
He (Almighty God) gave him (David) a Covenant of kingship
and a glorious throne in Israel. –Sirach 47:2-11
Related: David and Goliath -Chabad.org