Which prophet told Rehoboam, "You have forsaken Me; therefore I have forsaken you into the hand of Shishak"?

Answer: Shemaiah

When Shishak of Egypt invaded, Shemaiah brought God's word to Rehoboam and Judah's leaders, who then humbled themselves.

“Then Shemaiah the prophet came to Rehoboam and the leaders of Judah who had gathered at Jerusalem because of Shishak, and he said to them, “This is what the LORD says: ‘You have forsaken Me; therefore, I have forsaken you into the hand of Shishak.’””— 2 Chronicles 12:5 (BSB)