Abner, a prominent military commander, is speaking here about his intention to support David's rise to kingship over Israel. He acknowledges the divine promise that God made to David, which was to establish him as the king. By invoking God's judgment upon himself if he fails to act, Abner demonstrates the seriousness of his commitment. This reflects a broader biblical theme of God's sovereignty and the fulfillment of His promises through human agency.
The context of this statement is significant. Abner had been a supporter of Saul's house, but due to political and personal reasons, he decides to shift his allegiance to David. This shift is not merely political; it is also an acknowledgment of God's will. Abner's words remind us that God's plans often unfold through unexpected means and individuals. It encourages believers to trust in God's timing and to be open to the roles they might play in His divine plan. The verse also highlights the importance of integrity and accountability in leadership, as Abner holds himself to a high standard of fulfilling God's promise.