This morning I finally located the Bible book, the passage, and the verse where I want to focus for my dissertation work.
The book is Paul's letter to the Colossians.
The passage is this one from Chapter 3:
5 Put to death, therefore, the components of your earthly nature: sexual immorality, impurity, lust, evil desires, and greed, which is idolatry. 6 Because of these, the wrath of God is coming on the sons of disobedience. 7 When you lived among them, you also used to walk in these ways. 8 But now you must put aside all such things as these: anger, rage, malice, slander, and filthy language from your lips.
9 Do not lie to one another, since you have taken off the old self with its practices, 10 and have put on the new self, which is being renewed in knowledge in the image of its Creator. 11 Here there is no Greek or Jew, circumcised or uncircumcised, barbarian, Scythian, slave, or free, but Christ is all and is in all.
12 Therefore, as the elect of God, holy and beloved, clothe yourselves with hearts of compassion, kindness, humility, gentleness, and patience. 13 Bear with one another and forgive any complaint you may have against someone else. Forgive as the Lord forgave you. 14 And over all these virtues put on love, which is the bond of perfect unity.
And the sentence within which really brings together the elements of my dissertation is found in verses 9-10:
Do not lie to one another, since you have taken off the old self with its practices, and have put on the new self, which is being renewed in knowledge in the image of its Creator.
The reference to the "practices" of the "old self" and "new self" is tied to habits, both bad and good.
The talk of "knowledge" highlights the centrality of a disciple being taught (and thus the need for the church to take education seriously).
And the focus on restoring the "image of the Creator" ties the New Testament teaching about Christ back to the Old Testament - Genesis in particular - where humanity is created "in the image of God".
I will undoubtedly write more about this in the future, but for now I am just glad to have some direction on this - a key component of my project and one which had not yet felt settled.