But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets;

But now, apart from the law, the righteousness of God has been revealed, as attested by the Law and the Prophets.

Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:

And this righteousness from God comes through faith in Jesus Christ to all who believe. There is no distinction,

For all have sinned, and come short of the glory of God;

for all have sinned and fall short of the glory of God,

Being justified freely by his grace through the redemption that is in Christ Jesus:

and are justified freely by His grace through the redemption that is in Christ Jesus.

Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;

God presented Him as the atoning sacrifice through faith in His blood, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand.

To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.

He did this to demonstrate His righteousness at the present time, so as to be just and to justify the one who has faith in Jesus.