“末后的日子”指现今的世代（提后三1，犹18），开始于基督的第一次来临（彼前一20），一直持续到基督的第二次显现。彼得告诉我们，在末后的日子必有好讥诮的人来。这些好讥诮的人也许就是二章一节的假教师，他们的讥诮乃是背道的一部分，也是随从他们自己的私欲。
照四节看，这些讥诮者说，“主来临的应许在那里？因为从列祖睡了以来，万物依然存在，如同从创造之初一样。”主来临的应许是在旧约里（（诗七十二6-17； 一百一十1-3，一百一十八26, 但七13-14，亚十四3-9，玛四1-3），藉着圣先知（彼后三2）赐给列祖的。但讥诮者以讥诮的口气说，“祂来临的应许在那里？” 他们可能轻蔑的用代名词“祂”。讥诮者说，一切依然存在，没有改变，如同从创造之初一样。
在五至六节彼得反驳说，“他们故意不理这件事，就是从太古凭神的话有了诸天，和出于水并藉着水存立的地。藉着这些水，当时的世界被水淹没，就毁灭了。”这里彼得指出，讥诮者故意不理旧约中关于神用洪水施行审判的记载。那洪水是严厉的审判。然而，异端的讥诮者故意不理且有意否认，神藉着先知在经书上所说的话。因此彼得题醒信徒，要记念旧约先知和新约使徒所说的圣言（1-2）。
主来临的应许（4）乃是神的话。诸天和地是凭神的话而成的（来十一3），也是凭同样的话得以保留（一3），直留到不敬虔的人受审判遭毁坏的日子（彼后三7）。好讥诮的人不该不理这事，他们应当确信，凭着神的话，整个物质的宇宙，包括他们自己在内，都要因主来临受审判。
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Mockers in the Last Days — 2 Pet. 3:3-4
The “last days” denotes the closing period of the present age (2 Tim. 3:1; Jude 18). This period began from the end of the so-called apostolic age, in the latter part of the first century, and will last until Christ’s second appearance. Peter tells us that in the last days mockers will come. These mockers may be the false teachers in 2:1. Their mocking is part of the apostasy and is according to their lusts.
According to verse 4, these mockers say, “Where is the promise of his coming? For since the fathers fell asleep, all things continue as they were from the beginning of creation.” The promise of the Lord’s coming was given to the fathers by the holy prophets in the Old Testament (Psa. 72:6-17; 110:1-3; 118:26; Dan. 7:13-14; Zech. 14:3-9; Mal. 4:1-3). But the mockers said with a mocking tone, “Where is the promise of his coming?” It is possible that they used the pronoun “his” in a contemptuous manner. The mockers said that everything has continued unchanged from the beginning of creation.
In verses 5 and 6 Peter fights back: “For this is hidden from them by their own willfulness, that by the word of God the heavens were of old, and the earth, subsisting out of water and through water, through which the world then, being flooded by the water, perished.” Here Peter points out that the mockers willingly ignore the record in the Old Testament concerning God’s judgment by the flood. That flood was a serious judgment. Nevertheless, the heretical mockers ignore willfully and deny purposely the word of God spoken by the prophets in the Scriptures. Therefore, Peter reminds the believers to remember the holy words spoken by both the Old Testament prophets and the New Testament apostles (vv. 1-2).
The promise concerning the Lord’s coming (v. 4) is the word of God. The mockers should not ignore that it was by the word of God that the heavens and the earth came into existence (Heb. 11:3), and it is by the same word that the heavens and the earth are being kept (Heb. 1:3) for the day of judgment and destruction of ungodly men (2 Pet. 3:7). Therefore, the mockers should be assured that by the word of God all the material universe, including them, will be judged by the coming of the Lord.