Verses with the word jahaz in the Old Testament (5 verses):

Numbers 21:23
And Sihon would not suffer Israel to pass through his border: but Sihon gathered all his people together, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel.

Deuteronomy 2:32
Then Sihon came out against us, he and all his people, to fight at Jahaz.

Judges 11:20
But Sihon trusted not Israel to pass through his coast: but Sihon gathered all his people together, and pitched in Jahaz, and fought against Israel.

Isaiah 15:4
And Heshbon shall cry, and Elealeh: their voice shall be heard even unto Jahaz: therefore the armed soldiers of Moab shall cry out; his life shall be grievous unto him.

Jeremiah 48:34
From the cry of Heshbon even unto Elealeh, and even unto Jahaz, have they uttered their voice, from Zoar even unto Horonaim, as an heifer of three years old: for the waters also of Nimrim shall be desolate.