John speaks of Himself as a servant of Jesus Christ, as does many of the New Testament leaders. The transformation came through Christ's blood, we now are identified by His blood and not our own standing. The reason is this. Long ago they were waited on continually and got little exercise. When the veins showed through their skin, it appeared that the blood was pale blue.
Christians constitute a spiritual aristocracy, and that is also due to blood.
And our walk on this Earth will bear witness to God's supernatural sustaining power much as it did when Israel walked for 40 years and the sandals on their feet never wore out. The importance of sandals on their feet had to do with the upcoming journey. Israel's journey required them to be able to walk successfully through a dirty wilderness. Their walk would not be successful without a proper covering.