“Thus,
You may know
The truth
Concerning the things
About which
You have been instructed.”
ἵνα ἐπιγνῷς περὶ ὧν κατηχήθης λόγων τὴν ἀσφάλειαν.
Luke continued with his address to Theophilus. He wanted him to know or recognize (ἵνα ἐπιγνῷς) the truth or certainty (τὴν ἀσφάλειαν) about what words or things he had been instructed about (περὶ ὧν κατηχήθης λόγων). This sounds like someone who had become a Christian and wanted to know more about Jesus. In fact, the Greek term (κατηχήθης) has become the basis of the word catechism or teaching. This clearly indicates that this was a new Christian wanting to know more. The literate Greek reader of this work would already have had a rudimentary knowledge of Jewish and early Christian activities, but wanted more.
Eugene Finnegan Bible Project 