When Jesus wanted to describe what the world would be like just before He returns, He did not reach for a monster or a mushroom cloud. He reached back to an old man, a boat, and a flood — and He said, in effect, watch Noah’s day, and you will know mine.
“But as the days of Noe were, so shall also the coming of the Son of man be.” — Matthew 24:37
“And knew not”
Here is the part that unsettles, because it is not what we expect. Jesus’ emphasis falls not only on how wicked that generation was, but on how oblivious it was:
“For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark, and knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.” — Matthew 24:38–39
Eating, drinking, marrying — ordinary life, none of it evil in itself. The point is the three words “and knew not.” Life went on as normal, business as usual, right up to the morning the water came — and then it was too late. The sign of the last days, Jesus says, is a world comfortably distracted, going about its routines, unaware the door is about to shut. Not a world that is merely bad, but a world that is not paying attention.
Why the flood came
And yet that generation was also deeply corrupt, in a way that reads like this morning’s news. Genesis names two things:
“And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.” — Genesis 6:5
“The earth also was corrupt before God, and the earth was filled with violence.” — Genesis 6:11
The inside and the outside had both gone rotten: the thoughts of the heart were “only evil continually,” and the streets were full of violence. You do not have to strain to see the parallel. We only need to look around.
The preacher no one believed
But God did not drop judgment without warning. For decades — a window Scripture frames as about 120 years (Genesis 6:3) — one man built a huge boat on dry land and told everyone who passed why. Peter calls him “a preacher of righteousness” (2 Peter 2:5); Hebrews says, “by faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house” (Hebrews 11:7). He was mocked, surely, for building against a flood no one could imagine. And when the rain finally fell, exactly eight people had believed him enough to climb aboard. The patience of God was long; the crowd that listened was small.
One door — and God shut it
The ark had one door. And when the family and the animals were in, Scripture records a detail full of both grace and finality:
“And they that went in, went in male and female of all flesh, as God had commanded him: and the LORD shut him in.” — Genesis 7:16
God Himself closed the door. No one shut out whom God wanted in; and once it was shut, it was shut. That single door is a picture the whole Bible picks up: Jesus said, “I am the door: by me if any man enter in, he shall be saved” (John 10:9). There has only ever been one way into the ark, and one way into Christ.
Saved through the water
And the flood itself is not only judgment — it is a picture of salvation. Peter makes the connection explicit:
“Wherein few, that is, eight souls were saved by water. The like figure whereunto even baptism doth also now save us… by the resurrection of Jesus Christ.” — 1 Peter 3:20–21
The same water that drowned a corrupt world carried Noah’s family through it to a new world on the other side. That, Peter says, is a figure of baptism — not the washing of dirt from the body, but passing through the water into new life by the risen Christ. The ark is Christ; the flood is baptism; the new world is the new birth. Which is simply the gospel Peter preached on the day the church began. (See The New Birth.)
The scoffers — and the longsuffering
Peter also warned that the last days would sound exactly like Noah’s: people scoffing, “Where is the promise of his coming? for… all things continue as they were from the beginning” (2 Peter 3:4). His answer is that the same word that once flooded the world now keeps it for a coming fire — and that the delay is not neglect but mercy:
“The Lord is not slack concerning his promise… but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.” — 2 Peter 3:9
Every day the door stays open is a gift. Noah’s neighbors mistook God’s patience for proof that nothing would happen. It was proof of how much time they were being given.
The ark still stands open
So the days of Noah are not mainly a threat; they are an invitation with a deadline. There was an ark then; there is an Ark now — and His name is Jesus. The door is still open, and the same God who shut Noah safely in is calling you in before the water rises. You do not have to be ready for a flood you can’t see. You only have to walk through the door while it stands open:
“Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.” — Acts 2:38
Noah entered, and the rain could not reach him. Enter the Ark, and the day that takes the world unaware will find you already home.