It is difficult to grasp the full impact of the Lord’s Prayer without an appreciation of its Jewish background. Today’s Christians have quite a different understanding of prayer, Scripture and faith than a Jewish teacher like Jesus. One easily can miss the great depth of Jesus’ message.
The Lord’s Prayer 3: “Hallowed Be Thy Name”

How can the name of God be “hallowed”? Actually, the sense of the word might better be expressed in English by “sanctify.” The whole phrase could be translated, “May your name be sanctified.”