11二十七节接著说,『因为经上记著:「那不生育,没有生产过的,你要快乐;那未曾经过产难的,你要放声呼喊,因为独居的,比有丈夫的儿女更多。」』这指明亚伯拉罕属灵的子孙,比他天然的子孙更多。他属灵的子孙属于天上的耶路撒冷,属于在恩典自由下的应许之约;他天然的子孙属于地上的耶路撒冷,属于在律法奴役下的律法之约。照著创世记二十二章十七节,神应许亚伯拉罕的子孙要像海边的沙和天上的星。这里我们看见两种后裔,一种是属天的,一种是属地的;一种是属灵的,一种是天然的。犹太人是亚伯拉罕按著肉体的后裔,在基督里的信徒是他按著那灵的后裔。天然的后裔犹太人就像海边的沙;但属灵的后裔基督徒,人数远超过天然的后裔,他们就像天上的星。二十八节接著说,『弟兄们,你们乃是藉著应许生的儿女,像以撒一样。』藉著应许生的儿女,就是在应许之约下,藉著恩典,由天上的耶路撒冷所生的儿女。
11Verse 27 goes on to say, “For it is written, Rejoice, barren one who does not bear; break forth and shout, you who are not travailing, because many are the children of the desolate rather than of her who has a husband.” This indicates that Abraham’s spiritual descendants, who belong to the heavenly Jerusalem, to the covenant of promise under the freedom of grace, are many more than his natural descendants, who belong to the earthly Jerusalem, to the covenant of law under the slavery of law. According to Genesis 22:17, God promised that Abraham’s descendants would be like thes and of the seashore and like the stars of heaven. Here we see two kinds of descendants, the heavenly and the earthly, the spiritual and the natural. The Jews are Abraham’s descendants according to the flesh, whereas the believers in Christ are his descendants according to the Spirit. The natural descendants, the Jews, are like the sand of the seashore, but the spiritual descendants, the Christians, who outnumber the natural descendants, are like the stars. Verse 28 continues, “But you, brothers, according to Isaac, are children of promise.” The children of promise are those born of the heavenly Jerusalem through grace under the covenant of promise