And he [Christ] is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.1 John 2:2 KJV
There is really only one true way that we are equal. We all sin, we all fall short, and therefore we all need Jesus Christ who atoned for those sins. That is the great equalizer. That is the reason I cannot ever think I am better than anyone else. No matter what the situation is, no matter who the person is, we have this commonality between us. This knowledge is the great unifying force.
I firmly believe that knowing we are all in need of Jesus Christ is the foundation to peace. This will stop the divisiveness that exists because we think we know more than the next guy. Simply acknowledging that we are equal partners in Christ will allow us to humbly search for truth, dutifully stand up for our beliefs, reverently discuss our differences, and respect the free will of others who disagree. To me, that is where equality begins and ends.
As C.S. Lewis puts it: “There are no ordinary people. You have never talked to a mere mortal. Nations, cultures, arts, civilizations – these are mortal, and their life is to ours as the life of a gnat. But it is immortals whom we joke with, work with, marry, snub and exploit.” (The Weight of Glory.)
Does this mean that we don’t have any differences between us? Of course not. Does it mean we won’t have disagreements? How boring. What this does mean is that we can get along and encourage each other despite any perceived conflict. In other words, we can discuss and share ideas with each other from a place of strength. We will know when we speak to each other we are coming from a position of love and respect. That is what puts us on equal footing.
So, it is turning to the Lord that creates equality: “Yet ye say, The way of the Lord is not equal. Hear now, O house of Israel; Is not my way equal? Are not your ways unequal?” (Ezk 18:25) How can it be otherwise? “For since by man came death, by man came also the resurrection of the dead. For as in Adam all die, even so in Christ shall all be made alive.” (1 Cor 15:21,22)
“..it is to expiate this sin that Jesus Christ came to the world. His soul, created from the beginning with the other spirits, alone remained absolutely faithful to God.” (Origen, Tixeront, Historire des Dogmes, Vol. 1, p. 313.