In Abraham 1:39, Terah repents for trying to kill Abrahan:
Accordingly a famine prevailed throughout all the land of Chaldea, and my father was sorely tormented because of the famine, and he repented of the evil which he had determined against me, to take away my life.
However this repentance is short-lived as he returns to idolatry in Abraham 2:5:
And the famine abated; and my father tarried in Haran and dwelt there, as there were many flocks in Haran; and my father turned again unto his idolatry, therefore he continued in Haran.
Jeff Lindsay notes how this correspond with other texts such as:
Where was Joseph Smith getting this information from?