godsend: a very helpful or valuable event, person, or thing
godsend for/to
对平摊账单来说，微信支付是个不可多得的好工具。
WeChat Pay is a godsend for splitting the bill.
（参考翻译：When it comes to splitting the bill, WeChat Pay is a godsend.）
Her boyfriend was a godsend when she was ill.
Taobao is a godsend for small manufacturers to distribute goods.
