I am afraid for you, lest I have bestowed upon you labor in vain.
All Commentaries on Galatians 4:11 Go To Galatians 4
Augustine of Hippo
AD 430
So, let the reader choose whichever interpretation he wishes, so long as he understands that such superstitious observances of times bring great peril to the soul, so much so that the apostle adds, “I am afraid, lest perhaps I should have labored in you in vain.” … And yet if someone, even a catechumen, is caught observing the sabbath by the Jewish rite, the church is confused. As it is, innumerable members of the church say with great complacency in open view of us, “I do not travel on the day after the first.” … Alas for human sinfulness, that we only denounce what is unfamiliar, but with familiar things we tolerate them, although they may be great and cause the kingdom of heaven to be shut against them absolutely. It is for them that the Son of God shed his blood. We come to tolerate them through frequent acquaintance with them, and through increased toleration we share in them.