Lecture
noun, verbal noun
Lecture of righteousness is still a lecture.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
講義の頭に、教授は私達がナイフにニックネームを付けているかどうかを尋ねました。
At the beginning of the lecture, our professor asked us if we have nicknames for our knives.