Seeking God represents either 1) asking God for help or 2) thinking about God and obeying him. AT: "ask you for help" or "think about you and obey you" (See: [[rc://en/ta/man/translate/figs-metaphor]])
These two phrases mean basically the same thing and emphasize the intensity of gladness. AT: "rejoice greatly" or "be very glad" (See: [[rc://en/ta/man/translate/figs-doublet]])