gThe meaning of this expression is uncertain, but “discerns” or “judges” seem good choices; see HALOT 932, which allows for “judges” or “in the estimation of our enemies”

In other versions

How could one have chased a thousand,

and two have put ten thousand to flight,

unless their Rock had sold them,

and the Lord had given them up?

For their rock is not as our Rock;

our enemies are by themselves.

How could one man chase a thousand,

or two put ten thousand to flight,

unless their Rock had sold them,

unless the Lord had given them up?

For their rock is not like our Rock,

as even our enemies concede.

How could one pursue a thousand,

or two put ten thousand to flight,

unless their Rock had sold them,

unless the Lord had given them up?

But their “rock” is not like our Rock,

as even our enemies concede.

How could one person chase a thousand of them,

and two people put ten thousand to flight,

unless their Rock had sold them,

unless the Lord had given them up?

But the rock of our enemies is not like our Rock,

as even they recognize.

How should one chase a thousand,

And two put ten thousand to flight,

Except their Rock had sold them,

And the Lord had shut them up?

For their rock is not as our Rock,

Even our enemies themselves being judges.

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