Courage and steadfastness in faith

وَلَمَّا بَرَزُوا۟ لِجَالُوتَ وَجُنُودِهِۦ قَالُوا۟ رَبَّنَآ أَفْرِغْ عَلَيْنَا صَبْرًا وَثَبِّتْ أَقْدَامَنَا وَٱنصُرْنَا عَلَى ٱلْقَوْمِ ٱلْكَـٰفِرِينَ

And when they went forth to [face] Goliath and his soldiers, they said, "Our Lord, pour upon us patience and plant firmly our feet and give us victory over the disbelieving people."

۞ فَلْيُقَـٰتِلْ فِى سَبِيلِ ٱللَّهِ ٱلَّذِينَ يَشْرُونَ ٱلْحَيَوٰةَ ٱلدُّنْيَا بِٱلْـَٔاخِرَةِ ۚ وَمَن يُقَـٰتِلْ فِى سَبِيلِ ٱللَّهِ فَيُقْتَلْ أَوْ يَغْلِبْ فَسَوْفَ نُؤْتِيهِ أَجْرًا عَظِيمًا

So let those fight in the cause of Allāh who sell the life of this world for the Hereafter. And he who fights in the cause of Allāh and is killed or achieves victory - We will bestow upon him a great reward.

قُل لَّن يَنفَعَكُمُ ٱلْفِرَارُ إِن فَرَرْتُم مِّنَ ٱلْمَوْتِ أَوِ ٱلْقَتْلِ وَإِذًا لَّا تُمَتَّعُونَ إِلَّا قَلِيلًا

Say, [O Muḥammad], "Never will fleeing benefit you if you should flee from death or killing; and then [if you did], you would not be given enjoyment [of life] except for a little."