The Hebrew has the reading “mocking/laughing” in verse 9 of chapter 21. On the other hand, the Greek Septuagint (LXX) and the Latin Vulgate (VG) have added “her son Isaac” in verse 9 of chapter 21.
Cleanse your hands, you sinners, and purify your hearts, you double-minded.—James. 4:8b. The book of James accuses his readers of being guilty of wars at 4:1