|Block with chip?|
The expression can be dated all the way back to 1621 when a certain Bishop Sanderson of Lincoln included these lines in a homily:
"Am I not a child of the same Adam... A chip of the same block, with him?"
It's a rhetorical question which swiftly passed into the bloodstream of the Queen's English, mutated into the current form, and moved beyond. Who'd have thought, though, that the 'old block' was originally old father Adam?
Apart from providing the language with a colourful expression however, I wonder how many of us - Christians included - would today respond unequivocally with a "yes, indeed" to the good clergyman's question?