7 The path of the righteous is level; you, the Upright One, make the way of the righteous smooth.

Read Isaiah 26:7 Using Other Translations

The way of the just is uprightness: thou, most upright, dost weigh the path of the just.
The path of the righteous is level; you make level the way of the righteous.
But for those who are righteous, the way is not steep and rough. You are a God who does what is right, and you smooth out the path ahead of them.