What does the Bible say about Christ's sovereignty over life and death?

The sovereignty of Christ over life and death is a central tenet of scripture. He emphatically states, 'No man taketh my life from me. I lay it down of myself' (John 10:18). This underscores His authority not only as the giver of life but also as the one who determines the very moment of our physical existence's end. In sovereign grace, God's timing is perfect, and every aspect of our lives, including when we breathe our last, is under His sovereign control. This should bring believers immense comfort, knowing that neither sickness, accidents, nor any external forces can determine their end—only God Himself has that power.