New Defender's Study Bible Notes
4:30 what saith the scripture. The reference, of course, is to Genesis 21:10, the point of the allegory being that the church should not allow false teachers to influence its belief and behavior. This admonition applied directly to the tolerance of Judaizers in the Galatian churches. It could also be applied to the folly of allowing false (i.e., unscriptural) doctrine of any kind to be taught in the church.