King James Version (KJV)
And the elders of Gilead said unto Jephthah, The LORD be witness between us, if we do not so according to thy words. {witness...: Heb. the hearer between us}
Modern English
The elders of Gilead said to Jephthah, “Yahweh will be witness between us. Surely we will do what you say.”
Hebrew
וַיֹּאמְר֥וּ זִקְנֵֽי־גִלְעָ֖ד אֶל־יִפְתָּ֑ח יְהוָ֗ה יִהְיֶ֤ה שֹׁמֵ֙עַ֙ בֵּֽינוֹתֵ֔ינוּ אִם־לֹ֥א כִדְבָרְךָ֖ כֵּ֥ן נַעֲשֶֽׂה׃
vayoʾmrv ziqney-gilʿad ʾel-yiptaḥ yhvah yihyeh shomeʿa beynvoteynv ʾim-loʾ kidbarka ken naʿasheh