Across
1 American nativity scene arranged by native Indians outside church (6)
5 Water sports act is bizarre when introduced by a queen (8)
9 Removal of Israeli extremists leaves these noblemen in a quandary (5)
10 Basic principle of unity initially not clearly evident in schism (8)
11 Endless strife stirred, making original ordinal (5)
12 Redesigned cope is put on friend of a bishop (9)
15 Victor? Initially I am inexperienced (8)
17 Trial arranged to include acceptable words of worship (6)
18 What separates two extreme positions (6)
20 A bit of tobacco ash seen scattered by front of nave! (8)
22 Did he ring the bells for Low Sunday? (9)
23 Particular eater, say, in leading position (5)
26 Large family magazine (3,5)
28 Girl providing bishop with sanctuary, forsooth (5)
29 Saints bound over ludicrous decree made orderly exit from church (8)
30 Graceful movement of elves round front of trees (6)

Diagonal
1 Advent preacher's unusual specification of biblical passage (7,3,5)

Down
2 He joins soldier in strong drink - old port (7)
3 Policemen crossing river to get gang? (5)
4 Sees changes in actual existence (4)
5 Atmosphere in retreat putting learner off (3)
6 Never sue DD - it turns out to be unwarranted (10)
7 Throw mast out for swine (9)
8 Sacred music provides a new simple farewell to head of Chapter (7)
13 Delighted, being in positive mood finally after prayers (7)
14 I'm involved with mess-up, eh? They may make things look better than they are (10)
16 Early Archbishop - venerable and popular with English (9)
19 Academic rite due to be sorted out (7)
21 Research chemist breaking down any salt (7)
24 Strange initial sign of Excalibur in lake (5)
25 A doctor's seen as a prophet (4)
27 You've reached this goal! (3)

Last week's solution