New Revised Standard Version
Children, it is the last hour! As you have heard that antichrist is coming, so now many antichrists have come. From this we know that it is the last hour.

Contemporary English Version
Children, this is the last hour. You heard that the enemy of Christ would appear at this time, and many of Christ's enemies have already appeared. So we know the last hour is here.

New American Bible
Children, it is the last hour; and just as you heard that the antichrist was coming, so now many antichrists have appeared. Thus we know this is the last hour.

Douay-Rheims Bible
Little children, it is the last hour: and as you have heard that Antichrist cometh, even now there are become many Antichrists: whereby we know that it is the last hour.

Little children, it is the last hour: and as you have heard that Antichrist cometh, even now there are become many Antichrists: whereby we know that it is the last hour.

Little.

1 John 2:1 My little children, these things I write to you, that you may not sin. But if any man sin, we have an advocate with the Father, Jesus Christ the just.

John 21:5 Jesus therefore said to them: Children, have you any meat? They answered him: No.

it is.

2 Timothy 3:1 Know also this, that in the last days shall come dangerous times.

Hebrews 1:2 In these days, hath spoken to us by his Son, whom he hath appointed heir of all things, by whom also he made the world.

1 Peter 1:5,20 Who, by the power of God, are kept by faith unto salvation, ready to be revealed in the last time. . . .

2 Peter 3:3 Knowing this first: That in the last days there shall come deceitful scoffers, walking after their own lusts,

Jude 1:18 Who told you that in the last time there should come mockers, walking according to their own desires in ungodlinesses.

ye have.

1 John 4:3 And every spirit that dissolveth Jesus is not of God. And this is Antichrist, of whom you have heard that he cometh: and he is now already in the world.

Matthew 24:5,11,24 For many will come in my name saying, I am Christ. And they will seduce many. . . .

Mark 13:6,21,22 For many shall come in my name saying, I am he: and they shall deceive many. . . .

Acts 20:29,30 I know that after my departure ravening wolves will enter in among you, not sparing the flock. . . .

2 Thessalonians 2:3-12 Let no man deceive you by any means: for unless there come a revolt first, and the man of sin be revealed, the son of perdition . . .

1 Timothy 4:1-3 Now the Spirit manifestly saith that in the last times some shall depart from the faith, giving heed to spirits of error and doctrines of devils, . . .

2 Timothy 3:1-6 Know also this, that in the last days shall come dangerous times. . . .

2 Timothy 4:3,4 For there shall be a time when they will not endure sound doctrine but, according to their own desires, they will heap to themselves teachers having itching ears: . . .

2 Peter 2:1 But there were also false prophets among the people, even as there shall be among you lying teachers who shall bring in sects of perdition and deny the Lord who bought them: bringing upon themselves swift destruction.

antichrist.

1 John 2:22 Who is a liar, but he who denieth that Jesus is the Christ? This is Antichrist, who denieth the Father and the Son.

1 John 4:3 And every spirit that dissolveth Jesus is not of God. And this is Antichrist, of whom you have heard that he cometh: and he is now already in the world.

2 John 1:7 For many seducers are gone out into the world who confess not that Jesus Christ is come in the flesh. This is a seducer and an antichrist.

whereby.

1 Timothy 4:1 Now the Spirit manifestly saith that in the last times some shall depart from the faith, giving heed to spirits of error and doctrines of devils,

2 Timothy 3:1 Know also this, that in the last days shall come dangerous times.