New Revised Standard Version
When the king of Ai saw this, he and all his people, the inhabitants of the city, hurried out early in the morning to the meeting place facing the Arabah to meet Israel in battle; but he did not know that there was an ambush against him behind the city.

New American Bible
The king of Ai saw this, and he and all his army came out very early in the morning to engage Israel in battle at the place in front of the Arabah, not knowing that there was an ambush behind the city.

Douay-Rheims Bible
And when the king of Hai saw this, he made haste in the morning, and went out with all the army of the city, and set it in battle array, toward the desert, not knowing that there lay an ambush behind his back.

And when the king of Hai saw this, he made haste in the morning, and went out with all the army of the city, and set it in battle array, toward the desert, not knowing that there lay an ambush behind his back.

Ai saw it

Joshua 8:5,16 But I, and the rest of the multitude which is with me, will approach on the contrary side against the city. And when they shall come out against us, we will flee, and turn our backs, as we did before: . . .

he wist not

Judges 20:34 And to march from the west side of the city. And other ten thousand men chosen out of all Israel, attacked the inhabitants of the city. And the battle grew hot against the children of Benjamin: and they understood not that present death threatened them on every side.

Ecclesiastes 9:12 Man knoweth not his own end: but as fishes are taken with the hook, and as birds are caught with the snare, so men are taken in the evil time, when it shall suddenly come upon them.

Isaiah 19:11,13 The princes of Tanis are become fools, the wise counsellors of Pharao have given foolish counsel: how will you say to Pharao: I am the son of the wise, the son of ancient kings? . . .

Daniel 4:31 Now at the end of the days, I, Nabuchodonosor, lifted up my eyes to heaven, and my sense was restored to me: and I blessed the most High, and I praised and glorified him that liveth for ever: for his power is an everlasting power, and his kingdom is to all generations.

Matthew 24:39,50 And they knew not till the flood came and took them all away: so also shall the coming of the Son of man be. . . .

1 Thessalonians 5:1-3 But of the times and moments, brethren, you need not, that we should write to you: . . .

2 Peter 2:3 And through covetousness shall they with feigned words make merchandise of you. Whose judgment now of a long time lingereth not: and their perdition slumbereth not.