Okay, Rom 3:21-26 is the epicenter of Paul’s gospel. Here’s my attempt at a paraphrase:
But that is not the end of the matter, death and condemnation are not the last words, God has now revealed his saving justice, revealed it apart from the precepts and parameters of the law, and yet the law and the prophets pointed ahead to it. This saving justice is displayed through faith in Messiah Jesus for everyone who believes. No distinctions or exceptions can be made because everyone has done evil things and have shunned the glory of God. And yet believers are declared to be righteous based on God’s wholly free grace as expressed in the redemption that comes through Messiah Jesus. He is the one who God presented as a sacrifice to expiate our sin and to propitiate his wrath when we put our faith in the blood of Jesus’ atoning death. In this way, God shows his justice by passing over the sins that we had earlier committed and in his merciful forbearance he demonstrates his just character so as to be himself just and the justifier of those who have faith in Jesus.