Ramban (Nahmanides) points out that if the people of Israel knew God’s name, Moses most likely knew the name as well, his knowledge being equivalent to theirs, and therefore telling them God’s name would prove nothing.
तसर्थ भगवान राम उसको अन्त्य गरे , तर कमै मात्र चर्चा छ रावणको राम्रा कामको उसको ज्ञानको ।