Will God forgive one who swore falsely by the Qur'an out of fear of family disunity and divorce, then repented and began to recite the Qur'an frequently?

Lying in general is a grave sin, and swearing an oath upon it is called a "Ghamoos oath" (a deeply immersive oath) because it immerses its perpetrator in Hellfire. However, if the lying and swearing an oath upon it were to prevent the breakup of a family, and there was no other way to avoid that except by lying and swearing an oath upon it, then we hope it would not be considered sinful. But if it is sinful, then repentance erases what came before it, and seeking forgiveness and repenting to Allah is correct and more cautious.