וְגַ֥ם עַל־הָֽעֲבָדִ֖ים וְעַל־הַשְּׁפָח֑וֹת בַּיָּמִ֣ים הָהֵ֔מָּה אֶשְׁפּ֖וֹךְ אֶת־רוּחִֽי׃
And also upon the servants and upon the handmaids In those days will I pour out My spirit.
Read kabbalistic (mystical) interpretation of Joel 3:2: and classical mystical sources.