Where it ought not — That place being set apart for sacred use. Matthew 24:15; Luke 21:20; Daniel 9:27.
Related Commentaries of Mark 13:14
Mark 13:14
14 But when ye shall see the abomination of desolation, spoken of by Daniel the prophet, standing where it ought not, (let him that readeth understand,) then let them that be in Judaea flee to the mountains: