1 Chronicles 12:18

12:18 But a spirit empowered Amasai, the leader of the thirty warriors, and he said:

“We are yours, O David!

We support you, O son of Jesse!

May you greatly prosper!

May those who help you prosper!

Indeed your God helps you!”

So David accepted them and made them leaders of raiding bands.

1 Chronicles 28:8

28:8 So now, in the sight of all Israel, the Lord’s assembly, and in the hearing of our God, I say this: Carefully observe all the commands of the Lord your God, so that you may possess this good land and may leave it as a permanent inheritance for your children after you.