Here David is saying that he agrees with God. This rhetorical question can be translated as a statement. Alternate translation: "My family is indeed like this before God!" (See: [[rc://en/ta/man/translate/figs-rquestion]])
David acknowledges that God has made a covenant with him. This rhetorical question can be translated as a statement. Alternate translation: "He has indeed made ... way." (See: [[rc://en/ta/man/translate/figs-rquestion]])
David believes that God will always help him and cause him to prosper. This rhetorical question can be translated as a statement. Alternate translation: "He increases my salvation and gives me my every desire." (See: [[rc://en/ta/man/translate/figs-rquestion]])