The Apostle says, Be like me, for though born a Jew, by reason of spiritual discernment I now consider carnal things of small importance. And he adds, For I am as you are, that is to say: For I, like you, am a man. Then he tactfully reminds them of his love so that they will not look on him as an enemy: Brothers, I beseech you, he says, you did me no wrong, as if to say, “Do not imagine that I want to wrong you.” And to have them imitate him as they would a parent, he addresses them as little children: My little children, with whom I am again in labor until Christ be formed in you. Actually he is here speaking more in the person of Mother Church than his own. So too he says elsewhere: I was gentle among you like a nurse fondling her little ones.
From an explanation of Paul’s letter to the Galatians by Saint Augustine, bishop