Again, the devil took Him to a very high mountain and showed Him all the kingdoms of the world and their glory.
And he said to Him, All these will I give You if You will fall down and worship me.
The third temptation is a matter of worldly glory, promotion, ambition, position, and a promising future. All this is the glory of the world.
Luke 4:6 says that the kingdoms of the world and their glory were delivered unto the Devil; hence, to whomever he wills he gives them. Before his fall, Satan as the archangel was appointed by God to be the ruler of the world (Ezek. 28:13-14). Thus, he is called the ruler of this world (John 12:31), holding all the kingdoms of this world and their glory in his hand. He presented all these to the newly anointed King as a temptation in order to secure worship.