What doth the preface of the Lord's prayer teach us?

Answer

The preface of the Lord's prayer, which is Our Father which art in heaven (), teacheth us to draw near to God with all holy reverence and confidence, as children to a father, able and ready to help us (; ; ); and that we should pray with and for others (; ).

Read the 6 proof texts (KJV)

Matthew 6:9: After this manner therefore pray ye: Our Father which art in heaven, Hallowed be thy name.
Romans 8:15: For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
Luke 11:13: If ye then, being evil, know how to give good gifts unto your children: how much more shall [your] heavenly Father give the Holy Spirit to them that ask him?
Isaiah 24:8: The mirth of tabrets ceaseth, the noise of them that rejoice endeth, the joy of the harp ceaseth.
Acts 12:5: Peter therefore was kept in prison: but prayer was made without ceasing of the church unto God for him.
1 Timothy 2:1-2: ¹I exhort therefore, that, first of all, supplications, prayers, intercessions, and giving of thanks, be made for all men; ²For kings, and for all that are in authority; that we may lead a quiet and peaceable life in all godliness and honesty.