What are some reasons to trust the Bible as true to history and to our experience?

Jesus – “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, for ever. Amen.”

– Matthew 6: 9-13

Question – What should be the implication of the Declaration “Our Father which art in heaven,” to the Believers testimony?