Al-Anfal 8:2

إِنَّمَا ٱلْمُؤْمِنُونَ ٱلَّذِينَ إِذَا ذُكِرَ ٱللَّهُ وَجِلَتْ قُلُوبُهُمْ وَإِذَا تُلِيَتْ عَلَيْهِمْ ءَايَـٰتُهُۥ زَادَتْهُمْ إِيمَـٰنًا وَعَلَىٰ رَبِّهِمْ يَتَوَكَّلُونَ

Innamā l-mu'minūna alladhīna idhā dhukira l-lahu wajilat qulūbuhum wa-idhā tuliyat ʿalayhim āyātuhu zādathum īmānan waʿalā rabbihim yatawakkalūna

The believers are only those who, when Allāh is mentioned, their hearts become fearful, and when His verses are recited to them, it increases them in faith; and upon their Lord they rely -