Explanations needed. 10a Temporarily leave the pitch PARK
12a Sion very shortly suggested by scripture REVISED VERSION
24 a Friend's face finally carved out of marble ALLY
Temporarily leave - park (car etc)
a football pitch, among other venues are known as The park.
anagram of sion ver (Sion very missing last letter) = version. Sion ver, revised = REVISED VERSION, a version of the Bible.