angel

babe, colt, cub, fledgling, greenhorn, ingenue (or ingénue), naïf (or naif), newbie, tenderfoot, virgin

cherub, saint

mollycoddle, sissy, softy (or softie), weakling, wimp

dupe, pigeon, sap, sucker

foreboder, foreshadower, foretaste, forewarning

advertiser, announcer, blazoner, crier, proclaimer

courier, messenger, runner

augury, auspice, boding, foreboding, foreshadowing, omen, portent, prefiguring, presage

mark, sign, symptom

bellwether

benefactress, patroness

almoner, almsgiver, philanthropist

altruist, bestower, contributor, giver

helper, subscriber, supporter

guardian angel, protector, savior (or saviour)