'Sentries' in the Bible

After this, you will come to the Gibeah of God, where there are sentries of [the] Philistines. {Just as you enter} the town there, you will meet a procession of prophets coming down from the high place, with harp, tambourine, flute, and zither before them, and they will be prophesying.

Then they will be in my sanctuary, [those] serving [in] my sanctuary, [as] sentries at the gates of the temple and [as] [those] serving the temple; they will slaughter the burnt offering and the sacrifice for the people, and they will stand {before them} to serve them,