umm..Murray..doesn't the verse go (from memory)..."..and it came to pass that whenever he went into his brother's wife, he spilled his seed upon the ground"?

seems to me that is almost spelling it out...why would anyone read anything other into it?..hand? oral?...maybe, but it doesn't say so...

and, "I mean, has anyone on this planet ever practised coitus interruptus? "....you durn tootin' they have! Primitive form of birth control, but LOTS of people used it.(and yes, *grin*, lots intended to, but sorta forgot)