Psalm 34

My soul shall make her boast in the LORD: the humble shall hear thereof, and be glad. -Psalm 34:2

It was all process, the process of David, being who he was, and the one's around him being who they were.  He had turned in an enemy into a friend, and he blessed the Lord for this change in fortune.

In it, he saw the hand of the Lord, but he saw also his own fruits of his labor, living good, manifesting itself, as Paul and the others say, "you will know the tree by the fruit", that good men leave a trail of righteousness, and bad men leave behind a trail of desolation.

Truly, David felt he had cause to celebrate, and there came the call to teach, too, to show them what he had seen of the Lord's hand in his own life.

Come, ye children, hearken unto me: I will teach you the fear of the LORD.

What man is he that desireth life, and loveth many days, that he may see good?

Keep thy tongue from evil, and thy lips from speaking guile.

Depart from evil, and do good; seek peace, and pursue it.