Malachi asks these questions in order to remind his fellow Israelites about what they already know. AT: "You know that we all have one father, that our God has created a nation out of us." or "You all know that God is the father of all us Israelites, because he is the one who made our nation." (See: [[rc://en/ta/man/translate/writing-background]] and [[rc://en/ta/man/translate/figs-rquestion]])
This question is meant to express a statement. AT: "Certainly it is the same God who has created us." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Malachi asks this question in order to rebuke his fellow Israelites. This question may be expressed as a statement. AT: "We should certainly not mistreat our brothers and disrespect God's covenant by disobeying his commands, as you have been doing." (See: [[rc://en/ta/man/translate/figs-rquestion]])