sacrifice for faith

وَإِذِ ٱعْتَزَلْتُمُوهُمْ وَمَا يَعْبُدُونَ إِلَّا ٱللَّهَ فَأْوُۥٓا۟ إِلَى ٱلْكَهْفِ يَنشُرْ لَكُمْ رَبُّكُم مِّن رَّحْمَتِهِۦ وَيُهَيِّئْ لَكُم مِّنْ أَمْرِكُم مِّرْفَقًا

[The youths said to one another], "And when you have withdrawn from them and that which they worship other than Allāh, retreat to the cave. Your Lord will spread out for you of His mercy and will prepare for you from your affair facility."

لَقَدْ كَانَ لَكُمْ فِيهِمْ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُوا۟ ٱللَّهَ وَٱلْيَوْمَ ٱلْـَٔاخِرَ ۚ وَمَن يَتَوَلَّ فَإِنَّ ٱللَّهَ هُوَ ٱلْغَنِىُّ ٱلْحَمِيدُ

There has certainly been for you in them an excellent pattern for anyone whose hope is in Allāh and the Last Day. And whoever turns away - then indeed, Allāh is the Free of need, the Praiseworthy.