Romans 1:2

“Which he had promised afore, etc..] The Gospel is here further commended from the antiquity it: it was no novel doctrine, an upstart notion, but what God had conceived in his own breast from eternity. This mystery was hid in him from the beginning of the world, and was ordained before the world was; in time God was pleased to make it known to the sons of men; he “promised” it, he spoke of it, and declared it by his prophets, Isaiah and others, “afore” the Apostle Paul was called forth to be a preacher of it; which promise, or promises of it, lie in the Holy Scriptures; the books of the Old Testament, so called from the author, matter, and usefulness of them. The apostle speaks in the…”

“Which he had promised afore . . . in the holy scriptures--Though the Roman Church was Gentile by nation (see on Rom 1:13), yet as it consisted mostly of proselytes to the Jewish faith (see on Introduction to this Epistle), they are here reminded that in embracing Christ they had not cast off, but only the more profoundly yielded themselves to, Moses and the prophets (Act 13:32-33).”

“Which he had promised afore - Which gospel, or which doctrines, he had before announced. By the prophets - The word “prophets” here is used to include those who wrote as well as those who spake. It included the teachers of the ancient Jews generally. In the holy scriptures - In the writings of the Old Testament. They were called holy because they were inspired by the Holy Spirit, and were regarded as separated from all other writings, and worthy of all reverence. The apostle here declares that he was not about to advance anything new. His doctrines were in accordance with the acknowledged oracles of God. Though they might appear to be new, yet he regarded the gospel as entirely consistent…”

“Which he promised before - Of old time, frequently, solemnly. And the promise and accomplishment confirm each other. Deu 18:18; Isa 9:6-7; Isa 53:1; Isa 61:1; Jer 23:5. Romans 1:3”

“Which: Luk 24:26, Luk 24:27; Act 10:43, Act 26:6; Tit 1:2 by: Rom 3:21 the holy: Rom 3:2 Romans 1:3”