In the image [below], our Infant Lord, seated in the lap of our Lady, holds an orb surmounted with a cross. This is not, as has been suggested by one or two of our parishioners, the "Holy Hand Grenade of Antioch." Rather, it is properly known as a globus cruciger, which simply means "cross-bearing orb." From the middle ages, it has represented Christ's lordship over the orb of the world. Iconography in which Jesus is depicted holding the globus cruciger is called a Salvator mundi ("Savior of the World"). Last year an idiot (I use the term advisedly) paid $450 million dollars for a Salvator mundi that may, or may not, be the work of Leonardo DaVinci. In fact much of the argument among art historians centers on the orb in that picture, which some experts feel is not up to Leonardo's usual standard.
In any case, images of Christ as Salvator mundi depict an important truth, which we need always before our eyes, straining as we sometimes do to see God's kind providence in this dark and fallen world. Christ is Redeemer of the world and reigns over the world, and he is bringing all things to their perfect consummation. Christ is, as St Paul writes to the Ephesians, "head over all things for the Church" (Eph 1.22).
In other words: he's got the whole world in his hands.
God bless you,