וַיְבָ֣רֶךְ עֶזְרָ֔א אֶת־יְהוָ֥ה הָאֱלֹהִ֖ים הַגָּד֑וֹל וַיַּֽעֲנ֨וּ כָל־הָעָ֜ם אָמֵ֤ן ׀ אָמֵן֙ בְּמֹ֣עַל יְדֵיהֶ֔ם וַיִּקְּד֧וּ וַיִּשְׁתַּחֲוֻּ֛ לַיהוָ֖ה אַפַּ֥יִם אָֽרְצָה׃
Bendijo entonces Esdras á SEÑOR, Dios grande. Y todo el pueblo respondió, ¡Amén! ¡Amén! alzando sus manos; y humilláronse, y adoraron á SEÑOR inclinados á tierra.
Rashi on Nehemiah
with the uplifting of their hands with the raising of their hands, meaning that they lifted their hands on high to thank the Holy One, blessed be He, as it is stated: (I Kings 8:22): “...and spread forth his hands towards heaven.”
Metzudat David on Nehemiah
They said it twice to straighten the point