David's reign over Judah and Israel is a significant part of biblical history, illustrating the transition from tribal leadership to a unified monarchy. Initially, David ruled from Hebron for seven years and six months, a period that allowed him to strengthen his leadership and gain the loyalty of the tribe of Judah. This time was essential for David to build alliances and prepare for the eventual unification of the tribes.
After this period, David moved his capital to Jerusalem, where he reigned over all Israel and Judah for thirty-three years. This move to Jerusalem was strategic, as it was centrally located and neutral, not belonging to any particular tribe, which helped in unifying the nation. David's reign in Jerusalem is often seen as a golden age, marked by military victories, political stability, and religious significance, as he brought the Ark of the Covenant to the city. His leadership laid the groundwork for a strong, centralized kingdom, fulfilling God's promise to establish David's dynasty, which would ultimately lead to the coming of the Messiah.