en_tn_condensed/isa/55/09.md

for as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts

Yahweh speaks of the things that he does and how he thinks as being far superior to or higher than what people do and think, just like the sky is much higher than the earth. (See: rc://en/ta/man/translate/figs-metaphor)