i Register
In some senses, godsend is marked as archaic, British. Watch for register when choosing this word.
noun
An instance of unexpected benefit or good fortune; a windfall.
"You do, indeed, seem to take it to heart!" exclaimed the actress, an expression of jealous anger crossing her features; "why, it is quite a God-send for you! many a heart is caught in the rebound.[…]"
[O]nce again, as in 1803, we were on the brink of being sacrificed to the very lunacies of retrenchment. By a mere god-send, more troops happened to arrive from the Indian continent.
An instance of unexpected benefit or good fortune; a windfall.
Its seldom sic [such] rich Godsends come on our coast—no since the Jenny and James came ashore in King Charlie's time.
A person who provides greatly needed assistance.