This was taken from the 1999 WT, 7/15.
When Paul warned of experiencing “shipwreck,” he had in mind some who had “thrust aside” their good conscience and had lost their faith. (1 Timothy 1:19) Among them were Hymenaeus and Alexander who fell into apostasy, deviating from the truth and speaking abusively. (1 Timothy 1:20, footnote; 2 Timothy 2:17, 18) Today, apostates, who deviate from the truth, verbally beat “the faithful and discreet slave,” in effect biting the hand that had been feeding them spiritually. Some resemble the “evil slave,” implicitly saying, “My master is delaying.” (Matthew 24:44-49; 2 Timothy 4:14, 15) They deny that the end of this wicked system of things is near and criticize the spiritually alert slave class for maintaining a sense of urgency among Jehovah’s people. (Isaiah 1:3) Such apostates succeed in “subverting the faith of some,” inducing spiritual shipwreck.—2 Timothy 2:18.
Other dedicated Christians have wrecked the ship of their faith by thrusting aside their conscience and indulging in this world’s unbridled pleasure-seeking and its sexual immorality. (2 Peter 2:20-22) Still others scuttle their ship of faith because in their view the haven of the new system of things does not yet seem to be appearing on the horizon. Unable to make time calculations concerning the fulfillment of certain prophecies, and putting “Jehovah’s day” off in their minds, they abandon true worship. (2 Peter 3:10-13; 1 Peter 1:9) They soon find themselves back in the murky, troubled waters of the present system of things. (Isaiah 17:12, 13; 57:20) Some who have stopped associating with the Christian congregation still believe that it practices the true religion. However, they evidently lack the patience and endurance required to wait for the new world that Jehovah God has promised. Life in Paradise has not come soon enough for them.