Who do you think you are?
The problem with the perspective of our founding fathers was not their self-image. They knew they were white. They knew they were males. The problem was the inherent value that they placed on these qualities.
In the last few verses of Galatians 3, we find Paul charging something very similar. His opponents, the judaisers, were not incorrect in their self assessment. They were indeed Jews. They were indeed freemen. They were indeed male. And, as an interesting tidbit of historical context, those three attributes comprised a common prayer for the Jewish member of a synagogue in the 1st century--not unlike (though not identical to) the haughty prayer of the Pharisee in Luke 18.
The Judaisers were not wrong, however, in that they were Jews. They were male. They were freemen. They were wrong, however, in the ultimate relevance of these facts to the matter of their own righteousness.
However, this topic burrows far deeper into the theological and doctrinal realms than mere social justice and racial equality. In the verses that follow, the first 7 verses of Galatians 4, Paul goes on to describe exactly what sort of equal playing field "we"--both Jews and Gentiles--are all on. Paul describes all of God's sons as once being children, and as children, likened to slaves. Under the guide of masters, children are held prisoner to the most basic of rules--such as the Law.
But Christ, born of a woman under the Law, redeemed us. The language is very reminiscent of Exodus 13, where firstborn sons belong to God and must be killed, that is unless redeemed by the blood of a spotless lamb. So, then, having been redeemed in similar fashion we are spared from death and reinstated our "full rights" as sons--nay, even heirs, as if to say firstborn sons. As a deposit of this inheritance--since, after all, we are sons--God sent the Spirit of His Son.
So, up to this point you may be thinking that all this amount to the very familiar doctrine of the atonement. Where does all that "burrowing far deeper into the theological and doctrinal realms" come from? Well, ask yourself this. In the description Paul gives in this text, is there ever a moment when we are not children, even before we are redeemed and given full rights as sons? As Paul teaches his readers the right view of their humble beginnings with God, he is sure to remind them that God foreknew them and redeemed them with purpose.
Moreover, the spirit of the sonship is not just a deposit. He is not just sent to help us live as heirs. He is not just sent to give us special powers and supernatural abilities as God's children. No, it is the Spirit Himself who actually cries "abba, Father." The Spirit is not sent to those who believe, it is sent to those to believe.
So, who do you think you are? Are you the religiously pious overly confident in your own righteousness. Are you the spiritually insightful one who found God and pursued Him with all your might? Are you the loving soul mimicking Christ as you try to bring Heaven to earth? Or, are you the child, born a child of God, redeemed by His son, and even given the very Spirit by which you cry out to your Father?