The Advent Crossword 2020

There's another hidden message in there somewhere...

No clue selected.
1
9
11
13
18
22
24
2
14
3
19
8
10
17
20
4
25
5
12
15
23
6
21
7
16
Across
1. Father, divine being and leader of apostles in temple (6)
4. I can start to take step back from cold place (6)
9. Bestow approval on inferior bishop first (5)
10. Just a single wake lacking energy is burdensome (7)
11. Small animal has problem mingling outside (7)
12. Each is European, to a substantial degree (5)
13. Several pounds of granite, perhaps (5)
15. Released on December 22. (5)
18. Sandi's crushed tablets of ibuprofen maybe (5)
20. Deny it's up in the air - it's inevitable (7)
22. Released on December 23. (7)
23. Balance politician and artist (5)
24. Lay the groundwork for the return of something distressing to the French (6)
25. US university returning to English city at an opportune moment (6)
Down
1. Released on December 21. (5)
2. Dull glow coming from single amethyst (5)
3. Smashed it, speed notwithstanding (7)
5. Go carefully, flipping last bit of pancake (5)
6. Infectious disease discombobulating Oscar and Rachel (7)
7. Tasty crust on Dad's snack (5)
8. Avoid cunning plan (5)
14. Found damaged in Cairo, an ancient instrument from the east (7)
15. After explosion one is full of lots of little spirals (7)
16. Yell at sweetheart, one with a very thin skin (7)
17. A humdrum time for lady's first gentleman, perhaps (5)
18. Energy cut after ions dispersed from disturbance (5)
19. Bore baboon (5)
21. Released on December 22. (5)