Rabbi Baruch Ashlag, receiving and giving blessing
A holy dialogue increases the life and goodness in the world. The Zohar teaches us that God’s only desire is to give goodness to His created beings. Therefore all that He wants to give us is ready for us. However, we cannot always receive the goodness He wants to give, because we become separated from Him by receiving for ourselves alone. Blessing God for everything we enjoy is a simple and wonderful way that Judaism teaches us to change the one-way flow into a productive dialogue.
The Scripture in Deuteronomy tells us that, just as God blesses us with His goodness so we also need to bless Him. The Zohar on this verse teaches that our blessing and thanking God for all He gives us, is the key to changing a one-way flow into a dialogue that only multiplies the goodness not only for ourselves but for all hummankind.