(Swaad) 38 : 46
إِنَّا أَخْلَصْنَاهُمْ بِخَالِصَةٍ ذِكْرَى الدَّارِ
We have chosen them exclusively reminding with Hereafter House.
All Messengers were reminding the concerned people that the aim of deputing mankind to the earth is to prepare Paradise in this fourth phase and to inherit It in the seventh phase as explained in verse 6: 165. But only one in a thousand believers who identify the Lord from Adhikr will do so and will succeed. See explanation 9: 71-72; 21: 92-94, and 58: 22.