Heidelberg Catechism - Lord's Day 52

127. Q . What does the sixth petition mean?
      A. “And do not bring us to the time of trial, but rescue us from the evil one” means:
By ourselves we are too weak to hold our own even for a moment.
And our sworn enemies— the devil, the world, and our own flesh— never stop attacking us.
And so, Lord, uphold us and make us strong with the strength of your Holy Spirit, so that we may not go down to defeat in this spiritual struggle, but may firmly resist our enemies until we finally win the complete victory.

128. Q . What does your conclusion to this prayer mean?
      A. “For the kingdom and the power and the glory are yours forever” means:
We have made all these petitions of you because, as our all-powerful king, you are both willing and able to give us all that is good; and because your holy name, and not we ourselves, should receive all the praise, forever.

129. Q . What does that little word “Amen” express?
      A. “Amen” means:
This shall truly and surely be!
It is even more sure that God listens to my prayer than that I really desire what I pray for.