The gateway is still open but, on the Last Day after Jesus delivers up the Kingdom of God to the FATHER, it will be closed FOREVER (1 Thessalinians 4:14-18) (1 Corinthians 15:21-24).
Jesus also warned that his coming will be just as in the days of Noe before the great flood, and in the days of Lot in Sodom and Gomorrah. He expressed how “they did eat, they drank, they married wives, they were given in marriage, until the day that Noe entered into the ark, and the flood came, and [DESTROYED THEM ALL].
Likewise also as it was in the days of Lot; they did eat, they drank, they bought, they sold, they planted, they builded; but the same day that Lot went out of Sodom, it rained fire and brimstone from heaven, and [DESTROYED THEM ALL]” (Luke 17:27–29).
“The time is fulfilled, and the Kingdom of God is at hand: repent ye, and believe the gospel” (Mark 1:15).
“I came not to call the righteous, but sinners to repentance” (Luke 5:32).
“Except ye repent, [YE SHALL ALL LIKEWISE PERISH]” (Luke 13:3).
“Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat; because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it” (Matthew 7:13–14).
“Blessed is the man that heareth me, watching daily at my gates, waiting at the posts of my doors” (Proverbs 8:34).
“Seek ye the LORD, [ALL YE MEEK OF THE EARTH], which have wrought his judgment; seek righteousness, seek meekness: it may be ye shall be hid in the day of the LORD’s anger” (Zephaniah 2:3).