indeed the believers are those whose hearts quake at the mention of allah and when his verses are recited to them it increased them in faith. they are those who put their trust in their lord.
إنما المؤمنون الذين إذا ذكر الله وجلت قلوبهم وإذا تليت عليهم آياته زادتهم إيمانا وعلى ربهم يتوكلون