In the verse, "All praise belongs to Allah, Lord of all the worlds," the phrase "Lord of all the worlds" gives the reason for "All praise belongs to Allah." Why does all praise belong to God? Because God is the "Lord of all the worlds." "Lord" here means someone who manages and directs things. The Lord of something is the one who manages it. He is the one who directs it. He is the One Who nurtures and helps things to grow. He is the master and owner.
