Jeremiah 13:23 Can the Ethiopian change his skin, or the leopard his spots? so can ye do good, which are accustomed to do evil.
This passage is often used to argue that man, once accustomed to sin, cannot change on his own. Some see it as proof that man is incapable, by his own efforts, of living according to God’s ways.
They interpret this text as a confirmation of man’s utter inability to turn away from evil without divine intervention.
Addiction to sin
Jeremiah is not speaking here of an irreversible sinful nature, but of moral conditioning due to repeated choices to sin .
The text emphasizes that a life devoted to evil makes voluntary change difficult, but it does not say that such change is impossible. This highlights the power of habits and external influences on human morality.
The Necessity of Repentance
The passage is a cautionary tale, calling us to recognize that becoming accustomed to sin remove the urgancy to renoucning sins and to walk according to integrity. God, throughout Jeremiah, offers calls to repentance, proving that change is always possible through divine grace and a renewed
will.
These two texts (Genesis 8:21 and Jeremiah 13:23) do not deny the possibility of living righteously, but they highlight the challenges associated with the human tendency to sin and the habituation to evil. They show personal responsibility.
Man is called to recognize his sinful inclinations, not to resign himself to them, but to confront them and turn away from them seeking mercy towards God.