Galatians 4:19-20. “My little children, of whom I travail in birth again until Christ be formed in you, I desire to be present with you now, and to change my voice: for I stand in doubt of you.”
Remember, this is a personal letter Paul wrote to the people who were saved under his ministry in Galatia. He loves them the way you love a child you have labored for and to whom you have given birth. Now, he feels as if he’s going through that birth process again as he labors to bring them back from legalism into the gospel of grace. It is a labor of love.
He wishes he could be there in person to say what needs to be said. He has spoken to the Galatians very strongly in his urgency to redirect their thinking. He says he’s like to “change his voice”: That is, he would not speak to strongly if he could be there in person and see them face to face. He would be softer, gentler. But he is not there, and he is not sure of them, so he’s using very strong language in order to make sure they hear his heart, and return to their faith in Christ.