The Watchtower, July 2023, page 2:
How will we respond if we are asked to preach a hard-hitting judgment message and unbelievers oppose us? (Rev. 16:21) We will need endurance to obey Jehovah, trusting that he will protect us. What will we do if our brothers lose some or all of their material things? (Hab. 3:17, 18) We will need compassion to move us to provide them with relief. How will we react if, as a result of the attack by a coalition of nations, we have to live in close quarters with our brothers and sisters for a while? (Ezek. 38:10-12) We will need strong love for them to help us get through that difficult time.
The Watchtower, May 2022, page 7:
During the great tribulation, the final judgment message will become more hard-hitting.
The Watchtower, November 2022, page 7:
Why is it vital to read the Bible and meditate on it? Doing so gives us the inner strength we need to preach the Kingdom message now and to proclaim the hard-hitting judgment message that we may deliver in the near future.
The Watchtower, May 2020, page 15:
That symbolic hailstorm may take the form of a hard-hitting judgment message delivered by Jehovah’s people. It could be that this message provokes Gog of Magog into attacking God’s people with the intention of wiping them off the earth.—Rev. 16:21.
15 This hard-hitting message and the final attack by God’s enemies may be the same events referred to at Daniel 11:44, 45.
Life and Ministry Meeting Workbook, August 2020, page 3:
During that tumultuous time, we may well deliver a hard-hitting judgment message.
The Watchtower, October 2019, page 16:
During the great tribulation, the message that we proclaim will likely change. Currently, we are preaching the good news of the Kingdom and we are endeavoring to make disciples. But at that time, we may well deliver a message as hard-hitting as hailstones.
The Watchtower, 15 July 2015, page 16:
This will not be the time to preach the “good news of the Kingdom.” That time will have passed. The time for “the end” will have come! (Matt. 24:14) No doubt God’s people will proclaim a hard-hitting judgment message. This may well involve a declaration announcing that Satan’s wicked world is about to come to its complete end.