The Lord’s Prayer: Hallowed Be Your Name

The word “Hallowed” isn’t used all that much in today’s world unless we’re talking about “Halloween”. But of course, that’s not how Jesus used this word when He used it in the “Lord’s Prayer”. In instructing us to pray “Hallowed Be Your Name”, Jesus was talking about something much more sacred and specific than "Halloween”.  So what does it mean? And why should we pray “Hallowed be Your name?”