One can use a variety of synonyms for the phrase "brings to one's knees" depending on the context and desired impact. Some options include: humbles, subdues, weakens, overpowers, conquers, defeats, crushes, tames, submits, and reduces. These words all convey a sense of defeat or surrender, with a connotation of being overwhelmed or outmatched. Some synonyms may emphasize different aspects of the experience, such as the loss of power, control, or dignity. In any case, using vivid and evocative language can help a writer create a strong and emotional impact on their audience.