ושפטו את העם משפט צדק (שופטים טז:יח)

When there are fewer Batei Dinim (courthouses), there accumulates more Din Torahs, which causes them to pasken – give a verdict hurriedly, and they can’t judge with yishuv hadas – mindfully, the way halacha requires. Therefore, the pasuk says,  שופטים ושוטרים תתן לך – establish enough Beis Dins, which will lead to ושפטו את העם משפט צדק – they will be able to pasken – judge righteously since every halacha will be thought through placidly, with the right frame of mind.