The Cattle - 6:54 "When those who believe in Our Verses come to you, they say, "Peace be upon you. Your Lord has made it a principle to be merciful. Therefore, whoever repents after an unintentional evil deed and corrects himself, know that He is Forgiving, Merciful."
The attitude of the believers towards the signs of Allah:
The Night Journey/17:107 "Say: "Believe in it or not!"When it is recited to those who have been given knowledge before, they fall on their faces in prostration"
The Night Journey/17:108 "Great is our Lord. The Word of our Lord has come true,"they say"
The Night Journey/17:109 They fall on their faces weeping, because it (the verses) increases their respect.

The Companies/39:23 Allah has sent down the best hadith in a coherent book in two parts. The skins of those who honor their Lord tremble because of it. Then their skins and hearts soften towards the message of Allah. This is Allah´s guidance; He guides whom He wills and/or guides whom He wills to it. There is no guidance for anyone whom Allah leads astray

The Family Of Imran/3:193 "Our Lord, we heard a caller calling us to faith, saying, ´Believe in your Lord,´ and we believed. Our Lord, forgive us our sins, cover our evil deeds, and take our lives as the righteous.

Mary/19:58 These are some of the prophets whom Allah has blessed. From the descendants of Adam, from those whom We carried with Noah, from the descendants of Abraham and Israel. They are those whom We have guided and chosen. When the verses of the Most Merciful are recited to them, they prostrate themselves weeping.

The Light/24:51 "When they are called to Allah and His messenger to judge between them, the believers say only this: "We have heard and obeyed."These are the winners."

The Ants/27:80 You cannot announce to the dead, nor can you announce the call to the deaf who turn their backs.
The Ants/27:81 Nor can you guide the blind out of their error. You can make it known only to those who believe in Our Verses; they accept (Your Call).

The Romans/30:52 You cannot make the dead to hear, nor can you make the deaf to hear the call as they turn their backs.
The Romans/30:53 Nor can you guide the blind from their error. You can make only those who believe in Our verses to hear, and they submit at once.

The Prostration/32:15 Those who truly believe in Our signs and miracles, when they hear them, they prostrate themselves and glorify their Lord without arrogance.