New Revised Standard Version
Joshua took all these kings and their land at one time, because the LORD God of Israel fought for Israel.

New American Bible
All these kings and their lands Joshua captured all at once, for the LORD, the God of Israel, fought for Israel.

Douay-Rheims Bible
And all their kings, and their lands he took and wasted at one onset: for the Lord the God of Israel fought for him.

And all their kings, and their lands he took and wasted at one onset: for the Lord the God of Israel fought for him.

because

Joshua 10:14 There was not before, nor after, so long a day, the Lord obeying the voice of a man, and fighting for Israel.

Exodus 14:14,25 The Lord will fight for you, and you shall hold your peace. . . .

Deuteronomy 20:4 Because the Lord your God is in the midst of you, and will fight for you against your enemies, to deliver you from danger.

Psalm 44:3-8 Thy hand destroyed the Gentiles, and thou plantedst them: thou didst afflict the people and cast them out. . . .

Psalm 46:1,7,11 Unto the end, for the sons of Core, for the hidden. [2] Our God is our refuge and strength: a helper in troubles, which have found us exceedingly. . . .

Psalm 80:3 Convert us, O God: and shew us thy face, and we shall be saved.

Psalm 118:6 The Lord is my helper: I will not fear what man can do unto me.

Isaiah 8:9,10 Gather yourselves together, O ye people, and be overcome, and give ear, all ye lands afar off: strengthen yourselves, and be overcome, gird yourselves, and be overcome. . . .

Isaiah 43:4 Since thou becamest honourable in my eyes, thou art glorious: I have loved thee, and I will give men for thee, and people for thy life.

Romans 8:31-37 What shall we then say to these things? If God be for us, who is against us? . . .