Here "knee" is a synecdoche for the whole person, and bending the knee to kneel on the ground is a metonym for worship. "In the name of" here is a metonym for the person, telling who it is they will worship. Alternate translation: "every person will worship Jesus," (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-metonymy]])