27 Your first father sinned; those I sent to teach you rebelled against me.
27 Thy first father hath sinned, and thy teachers
27 Your first father sinned, and your mediators transgressed against me.
27 Your original ancestor started the sinning, and everyone since has joined in.
27 Your first father sinned, And your mediators have transgressed against Me.
27 From the very beginning, your first ancestor sinned against me; all your leaders broke my laws.
Matthew Henry's Commentary on Isaiah 43:27
Commentary on Isaiah 43:22-28
(Read Isaiah 43:22-28)
Those who neglect to call upon God, are weary of him. The Master tired not the servants with his commands, but they tired him with disobedience. What were the riches of God's mercy toward them? I, even I, am he who yet blotteth out thy transgressions. This encourages us to repent, because there is forgiveness with God, and shows the freeness of Divine mercy. When God forgives, he forgets. It is not for any thing in us, but for his mercies' sake, his promise' sake; especially for his Son's sake. He is pleased to reckon it his honour. Would man justify himself before God? The attempt is desperate: our first father broke the covenant, and we all have copied his example. We have no reason to expect pardon, except we seek it by faith in Christ; and that is always attended by true repentance, and followed by newness of life, by hatred of sin, and love to God. Let us then put him in remembrance of the promises he has made to the penitent, and the satisfaction his Son has made for them. Plead these with him in wrestling for pardon; and declare these things, that thou mayest be justified freely by his grace. This is the only way, and it is a sure way to peace.