It is hard for us to imagine such power in a finger. The picture to the left says it all. There the point is that God can cause the sun to set with His finger of omnipotence easier than we can submerge a beach ball. Don’t reference or look at your own finger, that scrawny boney little thing, for that is like lighting a candle to the sun. God has infinitely more power in one finger than all of the nuclear weapons and bombs in the world going off at once. Pale and impotent stuff compared to the omnipotent God.
Remember the words of Isaiah 40:15,17–
“Behold, the nations are alike a drop from a bucket, and are regarded as a speck of dust on the scales; behold, He lifts up the islands like fine dust. All the nations are as nothing before Him, they are regarded by Him as less than nothing and meaningless.”