To answer this question, it is necessary to first define the term under discussion. According to the Merriam-Webster Online Dictionary, omnipotence is "the quality or state of being omnipotent." Someone who is omnipotent is "one who has unlimited power or authority."

The poem "The Pulley" by George Herbert describes God as having this unlimited power. This belief in an omnipotent God fits the profile of Herbert, who was a priest of the Church of England.

The speaker takes God's omnipotence⁠—in other words, his full power over humans and their destinies⁠—for granted in this poem. In the first line, the speaker proclaims that God made man. God then decides to bestow upon man good things such as riches, strength, beauty, wisdom, honor, and pleasure.

However, God withholds one gift: the gift of rest. God's reasoning is that if he gives rest to humankind, people will look to the gifts they have received and forget the God who gave them. Instead, God allows people to remain restless so that, in their weariness, they will turn to God for comfort.

We can see, then, that in this poem God manifests complete omnipotence. He has full power to create man, to bestow gifts, and even to withhold a gift to keep humankind dependent upon himself.