Consider the example of King Saul’s son Jonathan. He was not jealous when David was appointed heir to the throne.
(‏ ١ كو ١٣ :‏ ٤‏ )‏ وَلِكَيْلَا تَتَأَصَّلَ ٱلْغَيْرَةُ فِينَا ،‏ يَجِبُ أَنْ نَنْظُرَ إِلَى إِخْوَتِنَا مِثْلَمَا يَنْظُرُ يَهْوَهُ إِلَيْهِمْ .‏