What does it mean for Christians that the king's heart is in the hand of the Lord?

The saying that 'the king's heart is in the hand of the Lord' serves as a profound reminder of God's sovereignty over all creation, including the hearts of rulers and ordinary people alike. This truth implies that no ruler or individual operates outside the guideline of God's divine plan. For Christians, this assurance can bring peace amid uncertainty, knowing that God directs all events for His glory and the ultimate benefit of His people. This reflects the overarching theme of God’s governance over human affairs, reminding believers that God's purpose will be accomplished.