1 Chronicles 12:15-18

15 In the first month of one year, the time when the Jordan River overflowed its banks, they crossed the river, scattering the people who lived in the valleys both east and west of the river.
16 Once a group of men from the tribes of Benjamin and Judah went out to the fort where David was.
17 David went to meet them and said, "If you are coming as friends to help me, you are welcome here. Join us! But if you intend to betray me to my enemies, even though I have not tried to hurt you, the God of our ancestors will know it and punish you."
18 God's spirit took control of one of them, Amasai, who later became the commander of "The Thirty," and he called out, "David son of Jesse, we are yours! Success to you and those who help you! God is on your side." David welcomed them and made them officers in his army.

1 Chronicles 12:15-18 Meaning and Commentary

INTRODUCTION TO 1 CHRONICLES 12

This chapter gives an account of those that came to David at different times, and joined and assisted him both before the death of Saul, and when persecuted by him, and after he was made king of Judah in Hebron, and before he was king of all Israel, in order to it; of the Benjaminites that came to him when at Ziklag, 1Ch 12:1-7 of the Gadites that came to him when in the hold, 1Ch 12:8-15 of some of Judah and Benjamin, who came to him in the same place, 1Ch 12:16-18, and of the Manassites at the time he came with the Philistines against Saul, 1Ch 12:19-22 and the number of the several tribes are given, that came to him at Hebron to make him king over all Israel, 1Ch 12:23-40.

Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.