Here is a link to the Mattox article.
https://journals.sagepub.com/doi/full/10.1177/1063851220952319
Over against the idea of essential goodness, the thorough corruption of mankind needs to be maintained (Genesis 6:12; Psalm 14:1; Psalm 51:5; Romans 3:23; Ephesians 4:22).
The Jewish interpretation is not "thorough corruption of mankind," but that "while humans tended to corruption (Gen 6:5; 8:21). they were not basically corrupt creatures. Though they were constantly exposed to the evil impulse (יֵצֶר הָרָע
yetzer ha-ra), by carrying out God's commandments they could overcome or at least control it and thereby could develop their impulse for good (יֵצֶר הַטוֹב
yetzer ha-tov). The more closely they attended to
mitzvot, the greater would be their protection from sin." (
The Torah: A Modern Commentary, revised edition, pp. 37-38)
The OT passages are interpreted as referring to particular times in history, i.e., before the flood, before the destruction of the temple, and David's adultery and murder; rather than the dire state of humankind for all times.
Our Lutheran Confessions hint at our ability to do some good - in the civil righteousness realm.
"Concerning free will they teach that the human will has some freedom for producing civil righteousness and for choosing things subject to reason." (AC XVIII, 1 Latin Text, p. 51 K&W)
"Concerning free will it is taught that a human being has some measure of free will, so as to live an externally honorable life and to choose among the things reason comprehends." (AC XVIII, 1 German Text, p. 50 K&W)
"Therefore, it is helpful to distinguish between civil righteousness, which is ascribed to the free will, and spiritual righteousness, which is ascribed to the operation of the Holy Spirit [
alone added by Jonas's translation] in the regenerate. In this way outward discipline is preserved, because all people alike ought to know that God requires civil righteousness and that to some extent we are able to achieve it." (Ap XVIII, 9, p. 234, K&W)
I think that we often short change our ability to achieve some measure of civil righteousness - and to work at improving our civil righteousness. To put it in more biblical terms, we can increase and improve our actions of love towards neighbors (even those we don't like). We are called to seek to obey the civil use of the Law, which I believe, goes beyond just civil ordinances, but also one's personal moral code, which for Christians includes the command to love.