David begins with a vow of praise: he will bless the Lord at all times, his praise will always be in his mouth and the humble will be glad to hear it. He invites everyone to magnify the Lord's name together. He tells how he sought the Lord, and God answered him and delivered him from all his fears. Those who look to God are radiant and are not put to shame.
Then he speaks of himself in the third person: this poor man cried out, and the Lord heard him and saved him from all his troubles. The angel of the Lord encamps around those who fear him and delivers them. David invites us to taste and see that the Lord is good and calls blessed the one who takes refuge in him. Young lions suffer want and hunger, but those who seek the Lord lack no good thing.
In the second half David becomes a teacher of the fear of the Lord: keep your tongue from evil and your lips from deceit, turn from evil, do good and seek peace. The eyes of the Lord are on the righteous and his face is against evildoers. The Lord is near to the brokenhearted and saves the crushed in spirit. Many are the afflictions of the righteous, but the Lord delivers him out of them all and keeps all his bones. The psalm concludes that evil will slay the wicked, but the Lord redeems the life of his servants.