שִׂמְחָ֣ה לָ֭אִישׁ בְּמַעֲנֵה־פִ֑יו וְדָבָ֖ר בְּעִתּ֣וֹ מַה־טּֽוֹב׃
人因口中的應答而得喜樂；話合其時，何等美好！
Rashi
A man has joy with the response of his mouth According to its apparent meaning: Through a soft answer and gentle speech, people love him. Our Sages expounded it as referring to those who memorize the Torah; if they utter an answer with their mouth, they will remember it and rejoice with it.
Rashi
and how good is a word in time! They ask concerning the laws of Passover and the laws of Sukkoth in their season.