'Chosen' in the Bible

Who shall impeach those whom God has chosen? God declares them free from guilt.

How then does the matter stand? It stands thus. That which Israel are in earnest pursuit of, they have not obtained; but God's chosen servants have obtained it, and the rest have become hardened.

Greetings to Rufus, who is one of the Lord's chosen people; and to his mother, who has also been a mother to me.