How do they show their appreciation? They do so by “rendering [God] sacred service day and night. ” ​ — Revelation 7: 15 - 17.
إِنَّهُمْ « يُؤَدُّونَ [للهِ] خِدْمَةً مُقَدَّسَةً نَهَارًا وَلَيْلًا » .‏ —‏ رؤيا ٧ :‏ ​ ١٥ -‏ ١٧‏ .‏