We can read what God said near the start of human history: “A man will leave his father and his mother and he will stick to his wife, and they will become one flesh. ”
يَسْهُلُ عَلَيْنَا عَادَةً أَنْ نَحْتَمِلَ ٱلضِّيقَاتِ إِذَا عَرَفْنَا سَبَبَهَا .‏