For a more academic reading, I find Beale's "The Erosion of Inerrancy in Evangelicalism" to be an excellent presentation of evidence for the inerrancy of scripture.
http://books.google.com/books?id=jpLHcaKXD5IC&amp...

As you know, the Bible was handwritten and hand copied for centuries. This led to copying errors. Some are simple to understand, such as the copyist skipped a line, used a different spelling, or updated the copy to reflect different grammar. For example, would you copy: “Doest the Lord speakest thusly?” or change it to read, “Does the Lord talk like this?”

When making a handwritten copy, errors are inevitable. It is remarkable not that we have such errors, but how few there are. Those copying the Bible were generally very careful to be accurate. The invention of the printing press and the first major book printed using movable type, the Gutenberg Bible, did not occur until the 1450s. Yet, even printed books have errors, just fewer of them.

The field of study that scholars use to decide which ancient manuscript is most likely to not have been changed is known as Textual Criticism. It is a lot of work to learn the rules for textual criticism and then to examine all of the variants and finally make a decision that can be explained to other scholars as to what the most likely original reading is.

A much easier way for you to get a handle on a particular passage is to use the notes on the NET Bible. Note 19, for Matthew 6:13, follows. (The various ancient manuscripts are identified by the letters and numbers in parenthesis.) What matters to you is the conclusion, “The phrase was probably composed for the liturgy of the early church and most likely was based on 1 Chr 29:11-13; a scribe probably added the phrase at this point in the text for use in public scripture reading.”

19 tc Most mss (L W Θ 0233 Ë13 33 Ï sy sa Didache) read (though some with slight variation) ὅτι σοῦ ἐστιν ἡ βασιλεία καὶ ἡ δύναμις καὶ ἡ δόξα εἰς τοὺς αἰῶνας, ἀμήν (“for yours is the kingdom and the power and the glory forever, amen”) here. The reading without this sentence, though, is attested by generally better witnesses (א B D Z 0170 Ë1 pc lat mae Or). The phrase was probably composed for the liturgy of the early church and most likely was based on 1 Chr 29:11-13; a scribe probably added the phrase at this point in the text for use in public scripture reading (see TCGNT 13-14). Both external and internal evidence argue for the shorter reading.

Source: http://net.bible.org/bible.php?book=Mat&chapt...