Here the person is represented by his "mouth." Being able to talk is spoken of as the lips being open. Here not being able to speak is a symbol of being guilty of sin and not being able to make a defense. AT: "Lord, make me able to speak, and I will praise you" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
# you do not delight in sacrifice ... you have no pleasure in burnt offerings
This means that God wants something more important than these things. AT: "A sacrifice is not enough to please you ... you want something more than burn offerings" (See: [[rc://en/ta/man/translate/figs-explicit]])