The phrase "mighty things" means powerful or very big things. It refers to tasks, achievements, or objects that are incredibly strong, impressive, or important.
Sentences with «mighty things»
«I want to remind people that NASA dares mighty things,» said Cable. (planetary.org)
I applaud your courage to tell your story, and pray that the Lord does mighty things with your testimony. (goodbyehousehellohome.com)
I truly believe God is doing a mighty, mighty thing in this generation. (nakedpastor.com)