This verse contains Matthew's version of what many people call the Lord's Prayer. To begin with, he demonstrates that believers should address God as our heavenly Father (our Father in heaven). In this Christ's model prayer, the second phrase expresses praise for something wonderful and true about God: His name is hallowed. In Scripture, names play an extremely significant role, and the name of God carries an unsurpassed sense of purity and power. When we proclaim God's name as holy and hallowed, we acknowledge His greatness.
The prayer life of our Lord was so unique and special that it prompted his disciples to ask, "Teach us to pray." His disciples did not ask for instruction in teaching or preaching or to learn the ability to heal or to turn water into wine. Instead, they desired to be able to pray in the same manner as Jesus Christ, so they approached Him and asked, "Lord, please teach us to pray."
In front of the wide-eyed disciples, the unbroken love communion between the triune Godhead was revealed live. Jesus' intimate relationship with His Father must have caused wonder in the hearts of His followers. As we pray, let us remember that His Spirit has taken residence within the hearts of each of His children so that we can gaze into His face and address Him as "Our Father Who art in heaven."

Dear Heavenly Father, hallowed is Your name. Thank you for teaching me how to pray so we can express our gratitude and trust. The Lord Jesus addressed His Father in such an intimate way that I was truly astonished. Being Your child amazes and awes me beyond words. My Heavenly Father, thank You for everything. 
In Jesus's name I pray. Amen.