'Servant's' in the Bible

However, I will not tear away all the kingdom; I will give one tribe (Judah) to your son for the sake of My servant David and for the sake of Jerusalem which I have chosen.”

However, I will not take the entire kingdom out of his hand; but I will make him ruler all the days of his life for the sake of My servant David, whom I chose because he kept My commandments and My statutes.