Possible Clues:

• Prepare to pray, perhaps
• Prepare to talk to a child, maybe
• Use a pew for support
• Prepare to propose marriage
• 'Show respect for one who comes from Ireland, by the sound of it (5)'
• Show subservience, in a way
• Use a prayer rug
• Be in the front row in a team photo, say
• What some do before they pray
• Show obeisance