The path of the just is upright; the difficult path of the just is right to walk in
Other versions
King James Version
The way of the just is uprightness: thou, most upright, dost weigh the path of the just.English Standard Version
The path of the righteous is level; you make level the way of the righteous.New International Version
The path of the righteous is level; O upright One, you make the way of the righteous smooth.