2 Timothy 3:1
1But know this: that in the last days, grievous times will come.
Understand this: last-days trouble is not a rumor Timothy can postpone. Wesley heard the last days as the gospel dispensation itself, beginning at the Lord’s death—so the church already lives inside the warning.
Difficulty is expected under grace, not after it. The age of the Spirit is also the age of testing. Take the alarm to heart; do not wait for a later calendar before you watch.
Calvin: under the last days Paul includes the universal condition of the Christian church. There will not be, even under the gospel, such perfection that all vices are banished.
The last days are the church’s present climate, not a distant corridor. God is not surprised by the hardness; He told His servant beforehand so that Timothy would not treat corruption as proof the gospel had failed.