2 Samuel 2:11
In Hebron David was king over the tribe of Judah for seven years and six months.
1 Kings 2:11
He was king of Israel for forty years. He ruled seven years in Hebron and thirty-three years in Jerusalem.
2 Samuel 5:4-5
David was thirty years old when he became king. He ruled for forty years.
1 Chronicles 3:4
These six were born to David in Hebron, where he reigned seven years and six months. David reigned in Jerusalem thirty-three years,
1 Chronicles 29:27
for forty years. He ruled in Hebron for seven years and in Jerusalem for thirty-three.
Treasury of Scripture Knowledge
Summary
                            And the time that David was king in Hebron over the house of Judah was seven years and six months.                        
                    Bible References
Time
                                        2 Samuel 5:4                                        
                                                                                                                                David was thirty years old when he became king. He ruled for forty years.
                                    
                                        1 Kings 2:11                                        
                                                                                                                                He was king of Israel for forty years. He ruled seven years in Hebron and thirty-three years in Jerusalem.
                                    
                                        1 Chronicles 3:4                                        
                                                                                                                                These six were born to David in Hebron, where he reigned seven years and six months. David reigned in Jerusalem thirty-three years,
                                    
                                        1 Chronicles 29:27                                        
                                                            
                        for forty years. He ruled in Hebron for seven years and in Jerusalem for thirty-three.