What does 1 Chronicles 12:14 mean?

Attai the sixth, Eliel the seventh,

Johanan the eighth, Elzabad the ninth,

Jeremiah the tenth, and Machbannai the eleventh.

These are those who went over the Jordan in the first month, when it had overflowed all its banks; and they put to flight all who lived in the valleys, both toward the east and toward the west.

Some of the children of Benjamin and Judah came to the stronghold to David.

David went out to meet them, and answered them, “If you have come peaceably to me to help me, my heart will be united with you; but if you have come to betray me to my adversaries, since there is no wrong in my hands, may the God of our fathers see this and rebuke it.”