Give this warning to those in whose (hearts) is the fear that they will be brought (to judgment) before their Lord: except for Him they will have no protector nor intercessor: that they may guard (against evil). 51 Send not away those who call on their Lord morning and evening, seeking His face. In naught art thou accountable for them, and in naught are they accountable for thee, that thou shouldst turn them away, and thus be (one) of the unjust. 52 In this way We try some of them by means of others, so that they may ask, "Are these [lowly ones] whom God has singled out for His favours from among us? Does God not know best who are the grateful ones?" 53 And when those who believe in Our signs come humbly in your presence, say to them, “Peace be upon you – your Lord has prescribed mercy for Himself by His grace – that whoever among you commits a sin by folly and thereafter repents and reforms (himself), then indeed Allah is Oft Forgiving, Most Merciful.” 54 Thus do We explain the signs in detail: that the way of the sinners may be shown up. 55