This can be stated in active form. Alternate translation: "For we heard the good news just as they did" (See: [[rc://en/ta/man/translate/figs-activepassive]])
"But that message did not benefit those who did not join with the people who believed and obeyed." The author is talking about two groups of people, those who received God's covenant with faith, and those who heard it but did not believe. This can be stated in positive form. Alternate translation: "But that message benefited only those who believed and obeyed it" (See: [[rc://en/ta/man/translate/figs-doublenegatives]])