James 5:20 is a verse that Calvinists find particularly upsetting, since it seems to contradict their assertion that nothing we do through own efforts can merit God’s blessing. But there is a verse in Paul that is in full agreement with James on this point:
*Attend to yourself and to your teaching; persevere in both tasks, for by doing so you will save both yourself and those who listen to you. *(1 Tim. 4:16)
usccb.org/bible/1timothy/4