Reflection Starter from Isaiah

Today's first reading (Tuesday of the First Week of Lent) is as follows: "Thus says the LORD: Just as from the heavens the rain and snow come down and do not return there till they have watered the earth, making it fertile and fruitful, giving seed to the one who sows and bread to the one who eats, so shall my word be that goes forth from my mouth; It shall not return to me void, but shall do my will, achieving the end for which I sent it." - Isaiah 55:10-11