As for me, far be it from me that I should sin against the LORD by ceasing to pray for you. And I will continue to teach you the good and right way.
Two things Samuel here aims at: - I. To convince the people of their sin in desiring a king. They were now rejoicing before God in and with their king (Sa1 11:15), and offering to God the sacrifices of praise, which they hoped God would accept; and this perhaps made them think that there was no harm in their asking a king, but really they had done well in it.
Commenting on 1 Samuel 12:16-25
Moreover, as for me,.... As he had given them reason to believe that God would forgive their sin, by which they had offended him, rejecting him as their King, so he likewise forgave their offence against him in rejecting him as their governor under him, and so neither need fear the Lord nor him with a servile fear; and as God would still be gracious...
God forbid that I should sin - They had earnestly begged him, Sa1 12:19, to pray to God for them, that they might not die; and he tells them that he should consider himself a sinner, should he cease to be their intercessor.