Called By The Name

Deuteronomy 28:9-11 NIV
The Lord will establish you as his holy people, as he promised you on oath, if you keep the commands of the Lord your God and walk in obedience to him. 10 Then all the peoples on earth will see that you are called by the name of the Lord, and they will fear you. 11 The Lord will grant you abundant prosperity—in the fruit of your womb, the young of your livestock and the crops of your ground—in the land he swore to your ancestors to give you.

Obedience confirms of truly taking the Lord's name for one's own. It is when we disobey we take His name in vain. It is something visible and evident. This is the sign and wonder of walking with the Lord.
All the people of earth shall witness the children of heaven, the people of heaven.