Often when we talk and think about salvation “we” are at the center of the discussion. In other words, so many times we think about salvation as if it is all about ME. But to the contrary, this couldn’t really be further from the truth. Indeed, salvation includes humanity; but not as its center-point. You might want a little more proof than my mere assertion. Okay, here’s Paul:
What then shall we say to these things? If God is for us, who can be against us? 32. He who did not spare His own Son, but delivered Him up for us all, how shall He not with Him also freely give us all things? 33. Who shall bring a charge against God’s elect? It is God who justifies. 34. Who shall separate us from the love of Christ . . . ? ~ Romans 8:31–34a.
There is something lurking behind what is communicated here. As we read this, at face value it almost appears that “we” are the point of this passage; but I would want to counter that in fact it is Jesus who is the center-piece here. What Paul is doing is encouraging us, by an unspoken reality here, and that is that Christ is the One who has overcome condemnation; overcome by being condemned for us! The Son, the second person of the trinity, is whom salvation revolves around; it is His obedience, His sin-bearing, His resurrection that provides the framework for any discussion on salvation. He included us, by becoming “us” in the incarnation, in becoming the first fruits of His salvation.
And this is the point of “Christ-centred” salvation, it is His salvation, His plan, His gift, His triumph, His victory that we have been united to. Any time that we start thinking that salvation is mine, or that “I” am at the center of salvation; we fail to grasp the point of salvation, and that is to magnify the name of Jesus.
I hope this helps, I’m afraid this isn’t as clear as I would like . . . but it is what it is . I will be working at developing this more cogently later.