Гром не грянет - мужик не перекрестится


Гром не грянет - мужик не перекрестится
You have to get ready with all you need in time but not at the last moment when you are compelled to do it. See Готовь летом сани, а зимой телегу (Г), Как на охоту ехать, так собак кормить (K)
Cf: Don't have thy cloak to make when it begins to rain (Br.). A fool wants his cloak on a rainy day (Br.). Have not the cloak to be made when it begins to rain (Am.). Thatch your roof before rainy weather; dig your well before you are thirsty (Am.). Thatch your roof before the rain begins (Am.)

Русско-английский словарь пословиц и поговорок. . 2013.