Numbers 21:23

And Sihon suffered not Israel to pass through his boundary, but Sihon gathered together all his people, and came forth to meet Israel, towards the desert, and entered Jahaz, and fought with Israel.

Judges 11:20

But Sihon trusted not Israel, to pass through his boundary, so Sihon gathered together all his people, and encamped in Jahaz, - and fought against Israel.

Numbers 20:21

Thus did Edom refuse to give Israel passage through his boundary, - and Israel turned away from him.

Deuteronomy 2:30-32

But Sihon king of Heshbon, was not willing, to let us pass along through it, - for Yahweh thy God had suffered him to make his spirit harsh and his heart bold, that he might give him into thy hand - (as appeareth this day).

Deuteronomy 29:7-8

And when ye entered into this place, then came forth Sihon king of Heshbon and Og king of Bashan to meet us in battle and we smote them;

Isaiah 15:4

And Heshbon, hath made outcry, and Elealeh, Unto Jahaz, hath been heard their voice, - For this cause, do the armed men of Moab roar, Every man's soul, quivereth to him.

Jeremiah 48:34

From the outcry of Heshbon, Even unto Elealeh Even unto Jahaz, have they given forth their voice, From Zoar even unto Horonaim, the third Eglath, - For, even the waters of Nimrim, to utter desolation, have been turned:

Treasury of Scripture Knowledge

Summary

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.

Bible References

Sihon would

Deuteronomy 2:30
But Sihon king of Heshbon, was not willing, to let us pass along through it, - for Yahweh thy God had suffered him to make his spirit harsh and his heart bold, that he might give him into thy hand - (as appeareth this day).
Deuteronomy 29:7
And when ye entered into this place, then came forth Sihon king of Heshbon and Og king of Bashan to meet us in battle and we smote them;

Jahaz

Judges 11:20
But Sihon trusted not Israel, to pass through his boundary, so Sihon gathered together all his people, and encamped in Jahaz, - and fought against Israel.
Isaiah 15:4
And Heshbon, hath made outcry, and Elealeh, Unto Jahaz, hath been heard their voice, - For this cause, do the armed men of Moab roar, Every man's soul, quivereth to him.
Jeremiah 48:34
From the outcry of Heshbon, Even unto Elealeh Even unto Jahaz, have they given forth their voice, From Zoar even unto Horonaim, the third Eglath, - For, even the waters of Nimrim, to utter desolation, have been turned:

General references

Numbers 20:17
Let us, we pray thee, pass through thy land - we will not pass through field or vineyard, nor will we drink the waters of a well, - by the kings road, will we go - we will turn neither to the right hand nor to the left, until we get through thy boundary.
Deuteronomy 2:18
Thou, art passing, to-day, the boundary of Moab even Ar;
Judges 11:20
But Sihon trusted not Israel, to pass through his boundary, so Sihon gathered together all his people, and encamped in Jahaz, - and fought against Israel.
Judges 20:14
Then did the sons of Benjamin gather themselves together out of the cities, unto Gibeah, - to go forth to battle against the sons of Israel.
Psalm 136:19
Even Sihon, king of the Amorites, For, age-abiding, is his lovingkindness.