rejoice in (something)
To find great joy, amusement, or delight in or about something. Just because you weren't successful doesn't mean you should rejoice in seeing other people fail. I always rejoice in an opportunity to spend time with my kids.
rejoice in someone or something
to take great joy at someone or something. I am in love and I rejoice in my beloved! Roger rejoices in a good night's sleep.
rejoice in
Have or possess something highly desirable, as in He rejoices in a keen mind. [Late 1400s]
rejoice in
v. To feel joyful or delighted about something or someone: All the fans rejoiced in the team's success.