'Whomever' in the Bible

Do you not know that to whomever you present yourselves [as] slaves for obedience, you are slaves to whomever you obey, whether sin, [leading] to death, or obedience, [leading] to righteousness?

For to Moses he says, "I will have mercy on whomever I have mercy, and I will have compassion on whomever I have compassion."

Therefore, God has mercy on whomever he chooses, and he hardens the heart of whomever he chooses.