Times Jumbo Cryptic 633

[cheaton]

12 d what could produce ace or ice? r-s---e (7)
16a Old lover's resistance overcome by passionate urge e-h---(6)
52a support bishop becoming saint in the hereafter --e-t-e (7) think this may be trestle - but why
47d A small section of government that's very proficient a-e-- (5) last letter is 1st of the clue above 52a.

I have all other answers if anyone needs helpl

Thanks, Clare

[kayakamina]

12d Reserve 52a Trestle

16a Exhort 47d Adept

[Pangolin]

12d - Reserve

16a - exhort

52a

[Dinkypuzzled]

47d. adept ( a department.)

[Pangolin]

52a - trestle

47d - adept

[kayakamina]

To explain Trestle

Support Tee Bishop R Saint Luke Stl

Trestle

[cheaton]

Thanks to all who replied but the reasoning behind the bishop becoming saint is:

Support = trestle. B becomes ST so treble becomes trestle. Can't work out the hereafter bit.....

[Murielmci]

Hereafter means the answer hereafter which is treble then as before the b becomes st.

At least that was my reasoning.

[wideboy]

For trestle, I see ST going in for B, but where does treble come from?