Matthew Poole and continuators on Isaiah 43:27

27. Thy first father hath sinned; and thy teachers have transgressed against me.

Either, 1. Adam, from whom the guilt and filth of sin is propagated to thee: Or rather, 2. Abraham, who might well be called the first Father of the Israelites, because they all descended from him, had all their right and title to Gods Ordinances and Promises, and other special Priviledges from Gods Covenant, made with Abraham and with his Seed, and who is oft emphatically called their Father, as Iosh. 24. 2. Isa. 51. 2. &c. and the Iews gloried in, and trusted to that relation, which they had to Abraham, as we read Mat. 3. 9. Ioh. 8. 33. and elsewhere. And this agrees well with the foregoing context. For having sufficiently intimated, that they had no merits of their own, he now addeth, that even their Father Abraham, to whose merits they trusted, had no merits of his own, nor any occasion of boasting, for he also was a sinful man, and hath left some instances of his failings: Or, the first Father may be put collectively for their Forefathers; and so he tels them, that as they were sinners, so also were all their Progenitors, yea even the best of them, Abraham and David, and others, for whose sakes they expected to be pardoned and rewarded. And this indeed is usual with God to upbraid the Israelites with the sins of their Fathers.

Thy Priests and Prophets; who were their Intercessours with God, and who were generally presumed to be the holiest part of that people, and therefore if these were transgressours, the people had no reason to fancy themselves to be innocent.

Marginal references: Jud. 17. 10. & 18. 19.; Heb. interpreters.