What does Daniel 7:25 mean?

He'll speak against the Most High, oppress God's people, and try to change sacred times and laws. God's people will be handed over to him for a set period—'a time, times, and half a time.' Daniel 7:25 - Modern Text Bible

(This leader will openly defy God, persecute believers, and try to rewrite religious practices. He'll have power for a limited, divinely set period.)