Islam was founded when God united the twelve tribes around a stone and used the prophet Mohammed to put the stone in place. The stone is the Black Stone at the eastern corner of the Kaaba in Mecca.
“I chose a valuable stone, which I am placing as the cornerstone in Zion” (1 Peter 2:6)
Valuable Stone = Black Stone of Mecca
Cornerstone: the Black Stone of Mecca is the Cornerstone because it is located at the eastern corner of the Kaaba.
The Black Stone reflects sunlight in the darkness, and its light is the light of the Law. Anyone that follows the direction of its light will be led from the darkness to the light of the day. Its light is the moonlight; therefore Muslims, who look onto the direction of the moonlight, are led safely through the darkness to the light of the day.
For example, the reference to the "precious cornerstone" of the new Jerusalem in the Book of Isaiah 28:16 is identified in Islamic scholarship as the Black Stone of the Kaaba. This interpretation is said by ibn Qayyim al-Jawziyya (1292–1350) to have come from the People of the Book, though earlier Christian scholarship identifies the cornerstone with Jesus. - Wikipedia.
The Black Stone of Mecca was rejected by the Jews and the Christians as worthless turned out to be the instrument of global peace and reconciliation, and the source of salvation for the whole human race. The stone represents the crucified Jesus through whom justice, peace and reconciliation are brought to the world.
“The stone which the builders rejected as worthless turned out to be the most important of all” (Luke 20:17)
The stone = the Black Stone of Mecca
The builders = Jews and Christians
Turned out to be the most important of all - no Christian or Muslim would have ever believed that the Cornerstone in Mecca will take center stage in the salvation of the world.
The Cornerstone is the “stumbling stone” scheduled to bring down the most powerful people and the most powerful nations on earth.
“Look, I place in Zion a stone that will make people stumble, a rock that will make them fall” (Romans 9:33)
In the parable of the tenants in the vineyard, Jesus spoke of how he (the Foundation Stone) was rejected and murdered by those who thought they’ve already possessed the Kingdom of God. He spoke of how the kingdom was taken away from them and given to the Muslims on Judgment Day.
“He will come and destroy those tenants and give the vineyard to others.” (Luke 20:16) “ESV”
Jesus described the transfer of the kingdom to the Muslims in these words,
“What then is this that is written: ‘The stone that the builders rejected has become the cornerstone’?” (Luke 20:17) “ESV”
The stone that the builders rejected: Jesus
The Cornerstone: Jesus
The Kingdom of God had been a revolving kingdom moving from one location to another. The parable of the tenants in the vineyard was meant to explain how the kingdom was relocated. It was relocated from Jews to Christians, Christians to Muslims, and Muslims to Jews. The Jews had to reject Christ in order for the kingdom to relocate to the Christians, the Christians had to reject Christ in order for the kingdom to relocate to the Muslims, and the Muslims had to reject Christ in order for the kingdom to go back to the Jews. The true kingdom is the sum of the Jews, the Christians and the Muslims.