إِنْجِيلُ مَتَّى 10:42

وَمَنْ سَقَى أَحَدَ هَؤُلَاءِ ٱلصِّغَارِ كَأْسَ مَاءٍ بَارِدٍ فَقَطْ بِٱسْمِ تِلْمِيذٍ، فَٱلْحَقَّ أَقُولُ لَكُمْ: إِنَّهُ لَا يُضِيعُ أَجْرَهُ».

And whosoever shall give to drink unto one of these little ones a cup of cold water only in the name of a disciple, verily I say unto you, he shall in no wise lose his reward.