This volume by 19th-century Scottish pastor and theologian Horatius Bonar contains 24 meditations on the gospel in the Book of Romans.
"The power of the gospel is wholly saving; it is armed with power,—just in order to save," he writes. "There is nothing else in our world that can save but this. This gospel contains in it all that is needful to save. It reaches and reverses the condition of the lost. Nothing else does this. It saves, heals, comforts, gladdens, brings out of darkness into light. Salvation! This is its object. Nothing less than this. Not merely to reform, or elevate, or refine; but to save. Whatever it does less than this is in vain. It is salvation that we preach in preaching the gospel,—present, immediate, sure, eternal salvation! What then has the gospel done for you? Has it saved you? If not, it has come to you in vain. If it has only made you moral, or kept you moral, it has fallen short of its end."
"The power of the gospel is wholly saving; it is armed with power,—just in order to save," he writes. "There is nothing else in our world that can save but this. This gospel contains in it all that is needful to save. It reaches and reverses the condition of the lost. Nothing else does this. It saves, heals, comforts, gladdens, brings out of darkness into light. Salvation! This is its object. Nothing less than this. Not merely to reform, or elevate, or refine; but to save. Whatever it does less than this is in vain. It is salvation that we preach in preaching the gospel,—present, immediate, sure, eternal salvation! What then has the gospel done for you? Has it saved you? If not, it has come to you in vain. If it has only made you moral, or kept you moral, it has fallen short of its end."