NET

15 “So when you see the abomination of desolation—spoken about by Daniel the prophet—standing in the holy place” (let the reader understand),

Darby

The Abomination of Desolation Set Up in the Temple

15 When therefore ye shall see the abomination of desolation^D6911, which is spoken of through Daniel the prophet, standing in [what is a] holy place^D6912, (he that reads let him understand^D6913,)

Darby Bible Notes

desolation - See Note, Mark 13.14. place - 'Holy place' is without an article and characteristic. The Greek does not designate some particular place. I have inserted 'what is a' to generalize it. understand - Or 'consider [it].' see Note, Mark 13.14.

KJV

The Abomination of Desolation Set Up in the Temple

15 “When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:)”