There was a question in my Bible study that went a little something like this:
"What do you think it means that God's "thoughts" and "ways" are "higher" than the thoughts and ways of God's people?" (Isaiah 55:8-9)
As I ruminated on this, I realized God always gives us a description of how He wants us to see Him. Here it's the rain and snow which are different forms of the same thing. Rain waters immediately, while snow provides excess water over longer periods of time feeding above ground and below ground rivers and plains. This illustrates that God gives life.
Watering the earth causes seeds to grow, a foundational food source for all of His creation. When it's ripe, it's harvested for nourishment. This illustrates God's power and willingness to grow and nourish His creation.
His thoughts, ways, and words are higher than ours because they bring abundant life. This is His very nature as Creator, and His creation is always at the front of His mind. How He blesses us with His very being is never the same way twice and always in multi-faceted purpose as you can see in the life-cycle of the earth.
He wants to prosper and grow you (Jeremiah 29:11). He fulfills His promises that His Word will successfully accomplish what He sent it out to do. (Isaiah 55:10) It won't just nourish you or sustain you, but it will give you eternal life.
“He humbled you and let you be hungry, and fed you with manna which you did not know, nor did your fathers know, that He might make you understand that man does not live by bread alone, but man lives by everything that proceeds out of the mouth of the LORD.
“For the bread of God is that which comes down out of heaven, and gives life to the world. ... I am the living bread that came down out of heaven; if anyone eats of this bread, he will live forever; and the bread also which I will give for the life of the world is My flesh.”