“Used only in Gal. 4:24, where the apostle refers to the history” “of Isaac the free-born, and Ishmael the slave-born, and makes” use of it allegorically. “Every parable is an allegory. Nathan (2 Sam. 12:1-4) addresses David in an allegorical narrative. In the eightieth Psalm there “is a beautiful allegory: “Thou broughtest a vine out of Egypt,” “etc. In Eccl. 12:2-6, there is a striking allegorical” description of old age.