Isaiah 56:1

The scope of these verses is to show that when God is coming towards us in a way of mercy we must go forth to meet him in a way of duty. I. God here tells us what are his intentions of mercy to us (Isa 56:1): My salvation is near to come - the great salvation wrought out by Jesus Christ (for that was the salvation of which the prophets enquired and searched diligently, Pe1 1:10), typified by the salvation of the Jews from Sennacherib or out of Babylon. Observe, 1. The gospel salvation is the salvation of the Lord. It was contrived and brought about by him; he glories in it as his. 2. In that salvation God's righteousness is revealed, which is so much the beauty of the gospel that St. Paul makes this the ground of his glorying in it. (Rom 1:17), because therein is the righteousness of God revealed from faith to faith. The law revealed that righteousness of God by which all sinners stand condemned, but the gospel reveals that by which all believers stand acquitted. 3. The Old Testament saints saw this salvation coming, and drawing near to them, long before it came; and they had notice by the prophets of its approach.

— Matthew Henry's Concise Commentary (public domain)