2 Timothy 4:3
For the time = The for here in in vs. 6 cites two reasons for Paul's urgent charge. Two reasons why Timothy needed to preach, threfore the time would not be far away.
When they will not endure sound doctrine - Greek, “ healthful doctrine;” i. e., doctrine contributing to the health of the soul, or to salvation.
But after their own lusts - The seat of the problem. They will seek such kind of preaching as will accord with their carnal desires;
The word rendered “heap” - ἐπισωρεύω episōreuō - only here in the New Testament. It means “ to heap up upon, to accumulate;” and here “ to multiply.
The word rendered “itching” - κνήθω knēthō - only here in the New Testament. It means “ to rub, to scratch;” and then “ to tickle,” and here to feel an “ itching” for something pleasing or gratifying. The image is derived from the desire which we have when there is an itching sensation, to have it rubbed or scratched.