For God is not unjust. He will not forget how hard you have worked for him and how you have shown your love to him by caring for other believers, as you still do.
All Scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. God uses it to prepare and equip his people to do every good work.