"After this manner therefore pray ye: Our Father which art in heaven, Hallowed be Thy name. Thy kingdom come. Thy will be done in earth, as it is in heaven. Give us this day our daily bread. And forgive us our debts, as we forgive our debtors. And lead us not into temptation, but deliver us from evil: For Thine is the kingdom, and the power, and the glory, forever. Amen."To begin with, God is not the Father of everyone there. He is the Father of Jesus (Mt. 3:17; 17:5; Jn. 3:16; Acts 3:26; Gal. 4:4; 1 Jn. 4:9-10; etc.). He is the Father of all who receive Jesus as Lord (Jn. 1:11-12; Rom. 8:15-17; Gal. 4:6-7; 1 Jn. 3:2; etc.). Jesus described God as "OUR FATHER," which, by the very nature of the word, excludes others; that is, He is not "THEIR FATHER." Jesus has laid the foundation upon which prayer is valid: a Father/child relationship with Almighty God!
Jesus didn't claim God as His alone; and neither should we. We are not to pray, "My Father," but "Our Father." That means we are part of a family! We do not have exclusive rights, but all born again believers are "siblings." Therefore, when we pray, we should be praying for those things which will glorify God, meet the needs of all of God's children (not just mine), and be presented to God from His children, not just from His child (Mt. 18:19-20). Notice the pronouns in the sample prayer: "our," "us," and "we" appear a total of nine times! We need to be in fellowship with other believers; we need to be serving God and His children somewhere (Heb. 10:24-25)!
He is ours, only if we are His!