2 Wont to rob churches of their ornaments
Wont > Accustomed
3 And poor men's boxes of their due relief,
boxes > [poor-boxes in church, for alms] relief > {Alms, funds administered from parish doles}
4 Which given was to them for good intents;
intents > purposes
5 The holy saints of their rich vestments 6 He did disrobe, when all men careless slept,
careless > unconscious, free from cares; negligently
7 And spoiled the priests of their habiliments,
spoiled > stripped, robbed habiliments > vestments, attire