James 5:11-12

11As you know, we count as blessed those who have persevered. You have heard of Job’s perseverance and have seen what the Lord finally brought about. The Lord is full of compassion and mercy.

12Above all, my brothers and sisters, do not swear—not by heaven or by earth or by anything else. All you need to say is a simple “Yes” or “No.” Otherwise you will be condemned.