Mark 9:10

10 And they kept that saying with themselves, questioning one with another what the rising from the dead should mean.

Ver. 10. And they kept that saying ] With much ado they kept it (as the word εκρατησαν imports), for the rest of the disciples were very inquisitive, likely, what was said and done in the mount. A friend that can both keep counsel and give counsel is worth his weight in gold.