וַיְבָרֲכ֤וּ אֶת־רִבְקָה֙ וַיֹּ֣אמְרוּ לָ֔הּ אֲחֹתֵ֕נוּ אַ֥תְּ הֲיִ֖י לְאַלְפֵ֣י רְבָבָ֑ה וְיִירַ֣שׁ זַרְעֵ֔ךְ אֵ֖ת שַׁ֥עַר שֹׂנְאָֽיו׃
And they blessed Rebekah, and said unto her: ‘Our sister, be thou the mother of thousands of ten thousands, and let thy seed possess the gate of those that hate them.’
LaKelal VeLaPerat
It is good and proper to have a celebration for a Bat Mitzvah in the same way that is done for a Bar Mitzvah - to invite family, friends and acquaintances and have them participate in the celebration. At this occasion, the Bat Mitzvah girl should recite the Shehechiyanu blessing over a new garment and - if she is learned - she should say words relating to the day, read the Song of Devorah and the first two verses of Channah's prayer.1See Ben Ish Chai, Year 1, Parashat Reeh 17; Shut Yaskil Avdi vol. 8, Orach Chaim 17; Netivei Am 225 at the end; Shut Iggerot Moshe, vol. 1, Orach Chaim 104; Shut Yabeah Omer vol. 6, Orach Chaim 29:4. The Song of Devorah is Judges 5, [the mentioned verses of] Channah's prayer are I Samuel 2:1-2. And the father of the girl should recite the blessing of exemption from the punishment of this one (exempting a parent from responsibility when their child becomes an adult).2See Rama, Orach Chaim 225:72; Kaf HaChaim, Orach Chaim 225:15-16. And they should bless her and say to her, "Our sister, may you become thousands of myriads."3Genesis 24:60. And she should, of course, go beforehand to the synagogue to pray, but not to go up to the Torah.