1 Samuel ends on a sad but hopeful note with Saul killed and David waiting in the wings, but even David and the rest of the kings of Judah were preparation for the ideal Messiah King.
Jesus has authority and power over all things and is bringing the powers of darkness down.
Christian thinking is thinking like Jesus, especially as seen in his becoming one of us to die on the cross.
As Paul waited in prison, he was able to rejoice in two certain outcomes because of his view of life and death.