What does 1 Chronicles 28:4 mean?

But out of all my family, God picked me to be king over Israel forever. He chose Judah to lead, then picked my father’s family from Judah, and finally, out of all my father’s sons, he chose me. That’s how I ended up king over all Israel. 1 Chronicles 28:4 - Modern Text Bible

(David is explaining that his kingship isn’t just luck or politics—it’s because God specifically chose him, step by step, from among all the possible families and people.)