Exodus out of Egypt
The Corinthians were Dorian Greeks. Paul at 1 Corinthians 10:1 tells the Corinthians “Now I do not wish you to be ignorant, brethren, that our fathers were all under the cloud, and all had passed through the sea”, therefore telling the Corinthians that their ancestors had been in the Israelite Exodus out of Egypt.
Moses' Selection
Moses was favored for the love he displayed to his brethren, even despite the fact that the Egyptian whom he slew was likely an Adamite.
Exodus Chapter 2:
“11 And it came to pass in those days, when Moses was grown, that he went out unto his brethren, and looked on their burdens: and he spied an Egyptian smiting an Hebrew, one of his brethren. 12 And he looked this way and that way, and when he saw that there was no man, he slew the Egyptian, and hid him in the sand. 13 And when he went out the second day, behold, two men of the Hebrews strove together: and he said to him that did the wrong, Wherefore smitest thou thy fellow? 14 And he said, Who made thee a prince and a judge over us? intendest thou to kill me, as thou killedst the Egyptian? And Moses feared, and said, Surely this thing is known.”
There was no care for the Egyptian, and he was even an Adamite. Yet Moses was astonished when he found two men of Israel quarreling, knowing that it was wrong for them to be doing so. Because Moses understood this difference, caring for Israel and not for the alien, he was appointed leader over all the children of Israel, to bring them out of the captivity in Egypt.