The Israelites had arranged with the ambush that they should send up a great cloud of smoke from the city
NIV
Now the appointed signal between the men of Israel and the men in ambush was that when they made a great cloud of smoke arise from the city
AMP
Now there was an appointed sign between the men of Israel and the liers in wait, that they should make a great flame with smoke rise up out of the city.
KJV
Moab will be destroyed and her towns invaded; her finest young men will go down in the slaughter," declares the King, whose name is the LORD Almighty."
NIV
Moab has been made desolate, and his cities have gone up [in smoke and flame]; and his chosen young men have gone down to the slaughter, says the King, Whose name is the Lord of hosts.
AMP
Moab is spoiled, and gone up out of her cities, and his chosen young men are gone down to the slaughter, saith the King, whose name is the LORD of hosts.
KJV
I will sacrifice fat animals to you and an offering of rams; I will offer bulls and goats.
NIV
I will offer to You burnt offerings of fat lambs, with rams consumed in sweet-smelling smoke; I will offer bullocks and he-goats. Selah [pause, and calmly think of that]!
AMP
I will offer unto thee burnt sacrifices of fatlings, with the incense of rams; I will offer bullocks with goats. Selah.
KJV