וַיַּֽעֲנ֧וּ בְנֵי־גָ֛ד וּבְנֵ֥י רְאוּבֵ֖ן לֵאמֹ֑ר אֵת֩ אֲשֶׁ֨ר דִּבֶּ֧ר יְהוָ֛ה אֶל־עֲבָדֶ֖יךָ כֵּ֥ן נַעֲשֶֽׂה׃
And the children of Gad and the children of Reuben answered, saying: ‘As the LORD hath said unto thy servants, so will we do.
Read kabbalistic (mystical) interpretation of Numbers 32:31: and classical mystical sources.