A positive connotation for hardhearted could be "resolute" or "strong-willed," implying a sense of determination and unwavering resolve.

Hardhearted refers to a person who is without feeling, pity or warmth for others, especially in times of trouble or when others need help.

The opposite could be hardhearted, cold, or cruel.

No, God loves everyone. That's why He died on the cross; so that we wouldn't be punished for our sin.

Odysseus accuses Penelope of being hardhearted because she has remained faithful to him for 20 years, delaying the suitors who are trying to marry her while he is away. In his disguise as a beggar, Odysseus tests Penelope's loyalty before revealing his true identity.