And the problem with your version of the Lord's Prayer which you posted, is not how Jesus recited it! The doxolgy that many Protestant/non-Catholic sects recite " For thine is the kingdom, and the power, and the glory, for ever and ever" is recited out of its biblical context.
The doxology was 'NOT' original to the Biblical text and so it is not necessary to include the doxology as though taught by our Lord.
In the history of copying the biblical texts in manuscript form, at some point in such a process a scribe (copyist) put the doxology in a margin of a manuscript to remind readers that this is the doxological ending when the prayer is recited in the Liturgy or privately. At some subsequent point, a pious scribe decided to take it one step farther and inserted the doxology into the biblical text itself, as though taught by our Lord Himself, which He did not!
Whats ironic, is that you and others on this site accuse Catholics of not being "literally" faithful to Sacred Scripture and depending too much on tradition. In this case, we see that the Catholic Church has been faithful to the Gospel text of the Our Father, while you and other non-Catholic sects have added something of tradition to the word of Jesus.
Hmmmm..... So whats the word that come to mind?? Oh yeah..... Hypocrisy!
So the next time you recite the Lord's prayer, remember that the words, "For thine is the kingdom, and the power, and the glory, for ever and ever" are not the words of Jesus!
Pax Christi
"From henceforth, all geneations shall call me Blessed." ---Luke 1:48.