And Joshua
Yhowshuwa`  (yeh-ho-shoo'-ah)
Jehovah-saved; Jehoshua (i.e. Joshua), the Jewish leader -- Jehoshua, Jehoshuah, Joshua.

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burnt
saraph  (saw-raf')
to be (causatively, set) on fire -- (cause to, make a) burn(-ing), up) kindle, utterly.

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Ai
`Ay  (ah'ee)
Ai, Aja or Ajath, a place in Palestine -- Ai, Aija, Aijath, Hai.

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and made
suwm  (soom)
to put (used in a great variety of applications, literal, figurative, inferentially, and elliptically)wholly, work.

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it an heap
tel  (tale)
a mound -- heap, strength.

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for ever
`owlam  (o-lawm')
concealed, i.e. the vanishing point; generally, time out of mind (past or future), i.e. (practically) eternity; frequentatively, adverbial (especially with prepositional prefix) always

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even a desolation
shmamah  (shem-aw-maw')
devastation; figuratively, astonishment -- (laid, most) desolate(-ion), waste.

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unto this day
yowm  (yome)
a day (as the warm hours), New American Standard Bible
So Joshua burned Ai and made it a heap forever, a desolation until this day.

King James Bible
And Joshua burnt Ai, and made it an heap for ever, even a desolation unto this day.

Holman Christian Standard Bible
Joshua burned Ai and left it a permanent ruin, desolate to this day.

International Standard Version
Joshua burned Ai, turning it into a permanent mound of ruins, and it remains so to this day.

NET Bible
Joshua burned Ai and made it a permanently uninhabited mound (it remains that way to this very day).

GOD'S WORD® Translation
So Joshua burned Ai and made it a deserted mound of ruins. It is still in ruins today.

King James 2000 Bible
And Joshua burned Ai, and made it a heap forever, even a desolation unto this day.Joshua 8:28
Joshua 8:28 NIV
Joshua 8:28 NLT
Joshua 8:28 ESV
Joshua 8:28 NASB
Joshua 8:28 KJV