The second half of the chapter abandons cosmology and ends somewhere nobody reading the first half would predict.
It repeats the three humiliating titles rulers use of themselves, orphaned, widowed and unworthy, which chapter thirty-nine also cites, and draws the general rule that a thing is sometimes added to by being reduced and reduced by being added to. That much is the book's standard argument about diminishment.
Then the speaker says something in the first person: what others teach, I teach too. The violent and overbearing do not die a natural death. And I take this as the father of my teaching.
Three features of that are unusual. The book almost never acknowledges agreement with anyone else, and here it explicitly aligns itself with received wisdom rather than against it. It states a single proposition and calls it the origin of everything else it says, which no other chapter does. And the proposition chosen is a piece of ordinary moral folklore about bullies coming to bad ends, not a paradox and not a metaphysical claim.
The word rendered father, or in some readings the ancestor and origin of the teaching, has been read both as naming a source the teaching descends from and as naming its foundation. Either way the chapter is claiming that the whole apparatus of the way, non-action, softness and return is grounded in an observation anybody might make.
That is a plainer self-account than the book gives anywhere else, and it sits directly after its most obscure sequence, in the same chapter, with no transition between them.