Read and reflect on verse 486 from Surah Aal-i-Imraan: "O our Sustainer! Behold, we heard a voice call [us] unto faith, `Believe in your Sustainer!' - and so we came to believe. O our Sustainer! Forgive us...
رَبَّنَا إِنَّنَا سَمِعْنَا مُنَادِيًا يُنَادِي لِلْإِيمَانِ أَنْ آمِنُوا بِرَبِّكُمْ فَآمَنَّا ۚ رَبَّنَا فَاغْفِرْ لَنَا ذُنُوبَنَا وَكَفِّرْ عَنَّا سَيِّئَاتِنَا وَتَوَفَّنَا مَعَ الْأَبْرَارِ
"O our Sustainer! Behold, we heard a voice call [us] unto faith, `Believe in your Sustainer!' - and so we came to believe. O our Sustainer! Forgive us, then, our sins, and efface our bad deeds; and let us die the death of the truly virtuous!