نَحَمْيَا 12:45

حَارِسِينَ حِرَاسَةَ إِلَهِهِمْ وَحِرَاسَةَ ٱلتَّطْهِيرِ. وَكَانَ ٱلْمُغَنُّونَ وَٱلْبَوَّابُونَ حَسَبَ وَصِيَّةِ دَاوُدَ وَسُلَيْمَانَ ٱبْنِهِ.

And both the singers and the porters kept the ward of their God, and the ward of the purification, according to the commandment of David, and of Solomon his son.