2 Peter 3:4-7
They will say, “Where is the promise of his coming? For ever since the fathers fell asleep, all things are continuing as they were from the beginning of creation.” For they deliberately overlook this fact, that the heavens existed long ago, and the earth was formed out of water and through water by the word of God, 6 and that by means of these the world that then existed was deluged with water and perished. But by the same word the heavens and earth that now exist are stored up for fire, being kept until the day of judgment and destruction of the ungodly.
Matthew 24
36 “But concerning that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father only. 37 For as were the days of Noah, so will be the coming of the Son of Man. 38 For as in those days before the flood they were eating and drinking, marrying and giving in marriage, until the day when Noah entered the ark, 39 and they were unaware until the flood came and swept them all away, so will be the coming of the Son of Man. 40 Then two men will be in the field; one will be taken and one left. 41 Two women will be grinding at the mill; one will be taken and one left. 42 Therefore, stay awake, for you do not know on what day your Lord is coming. 43 But know this, that if the master of the house had known in what part of the night the thief was coming, he would have stayed awake and would not have let his house be broken into. 44 Therefore you also must be ready, for the Son of Man is coming at an hour you do not expect. ¶ 45 “Who then is the faithful and wise servant, whom his master has set over his household, to give them their food at the proper time? 46 Blessed is that servant whom his master will find so doing when he comes. 47 Truly, I say to you, he will set him over all his possessions. 48 But if that wicked servant says to himself, ‘My master is delayed,’ 49 and begins to beat his fellow servants and eats and drinks with drunkards, 50 the master of that servant will come on a day when he does not expect him and at an hour he does not know 51 and will cut him in pieces and put him with the hypocrites. In that place there will be weeping and gnashing of teeth.
1 Peter 4:7-9
The end of all things is at hand; therefore be self-controlled and sober-minded for the sake of your prayers. Above all, keep loving one another earnestly, since love covers a multitude of sins. Show hospitality to one another without grumbling.
1 Thessalonians 3:11-13
Now may our God and Father himself, and our Lord Jesus, direct our way to you, and may the Lord make you increase and abound in love for one another and for all, as we do for you, so that he may establish your hearts blameless in holiness before our God and Father, at the coming of our Lord Jesus with all his saints.
1 Thessalonians 5:23
Now may the God of peace himself sanctify you completely, and may your whole spirit and soul and body be kept blameless at the coming of our Lord Jesus Christ.
Philippians 4:5
Let your reasonableness be known to everyone. The Lord is at hand.
Hebrews 10:24-25
And let us consider how to stir up one another to love and good works, not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near.
1 John 2:28
And now, little children, abide in him, so that when he appears we may have confidence and not shrink from him in shame at his coming.