15 That is all they are to you— these you have dealt with and labored with since childhood. All of them go on in their error; there is not one that can save you.

Read Isaiah 47:15 Using Other Translations

Thus shall they be unto thee with whom thou hast laboured, even thy merchants, from thy youth: they shall wander every one to his quarter; none shall save thee.
Such to you are those with whom you have labored, who have done business with you from your youth; they wander about, each in his own direction; there is no one to save you.
And all your friends, those with whom you’ve done business since childhood, will go their own ways, turning a deaf ear to your cries.