Matthew 18:3

And said, Verily I say to you, except ye be converted, and become as little children, ye shall in no wise enter into the kingdom of heaven.

Mark 10:14-15

But Jesus seeing it was much displeased and said to them, Suffer little children to come to me, and forbid them not: for of such is the kingdom of God.

1 Peter 2:2

and all evil-speakings, As new born babes desire the sincere milk of the word, that ye may grow thereby:

1 Corinthians 14:20

Brethren, be not children in understanding: in wickedness be ye as infants, but in understanding be ye grown men.

Matthew 19:14

But Jesus said, Suffer little children to come to me, and forbid them not; for of such is the kingdom of heaven.

Matthew 5:20

For I say to you, That unless your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no wise enter into the kingdom of heaven.

Luke 18:16-17

But Jesus calling them to him, said, Suffer little children to come to me, and forbid them not; for of such is the kingdom of God.

Luke 22:32

But I have prayed for thee that thy faith fail not: and when thou art returned, strengthen thy brethren.

Matthew 5:18

For verily I say to you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all things be effected.

Matthew 6:2

Therefore when thou dost alms, do not sound a trumpet before thee, as the hypocrites do, in the synagogues and in the streets, that they may have glory of men. Verily I say unto you, they have their reward.

Matthew 6:5

And when thou prayest, thou shall not be as the hypocrites; for they love to pray, standing in the synagogues, and in the corners of the streets, that they may appear to men: verily I say unto you, they have their reward.

Matthew 6:16

Moreover, when ye fast, be not as the hypocrites of a sad countenance; for they disfigure their faces, that they may appear unto men to fast: verily I say unto you, they have their reward.

Matthew 13:15

For the heart of this people is waxed fat, and their ears are dull of hearing, and their eyes have they closed: lest at any time they should see with their eyes and hear with their ears, and understand with their hearts, and should be converted and I should heal them.

Matthew 19:23

Then said Jesus to his disciples, Verily I say to you, a rich man shall with difficulty enter into the kingdom of heaven.

Mark 4:12

So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.

Luke 13:24

And he said to him, Strive to enter in thro' the strait gate; for many, I say to you, will seek to enter in, and shall not be able.

John 1:51

Verily, verily I say to you, Hereafter ye shall see the heaven opened, and the angels of God ascending and descending on the Son of man.

John 3:3

Jesus answered and said to him, Verily, verily I say unto thee, Except a man be born again, he cannot see the kingdom of God.

John 3:5

Jesus answered, Verily, verily I say unto thee, Except a man be born of water and the Spirit, he cannot enter into the kingdom of God.

Acts 3:19

Repent ye therefore and be converted, that your sins may be blotted out, that the times of refreshing may come from the presence of the Lord,

Acts 14:22

Confirming the souls of the disciples, and exhorting them to continue in the faith; and that we must through many tribulations enter into the kingdom of God.

Acts 28:27

For the heart of this people is waxed gross, and with their ears they hear heavily, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their hearts, and should be converted, and I should heal them.

James 5:19-20

Brethren, if any one among you err from the truth, and one convert him,

2 Peter 1:11

For so an entrance shall be ministered to you abundantly into the everlasting kingdom of our Lord and Saviour Jesus Christ.

Treasury of Scripture Knowledge

Summary

And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven.

Bible References

And become

Mark 10:14
But Jesus seeing it was much displeased and said to them, Suffer little children to come to me, and forbid them not: for of such is the kingdom of God.
Luke 18:16
But Jesus calling them to him, said, Suffer little children to come to me, and forbid them not; for of such is the kingdom of God.
1 Corinthians 14:20
Brethren, be not children in understanding: in wickedness be ye as infants, but in understanding be ye grown men.
1 Peter 2:2
and all evil-speakings, As new born babes desire the sincere milk of the word, that ye may grow thereby:

General references

Mark 10:15
Verily I say to you, Whosoever shall not receive the kingdom of God as a little child, he shall in no wise enter therein.
Luke 9:46
And there arose a reasoning among them, which of them was the greatest?
Luke 22:26
But ye shall not be so: but he that is greatest among you, let him be as the younger, and he that is chief as he that serveth.
Acts 8:19
offered them money, Saying, Give me also this power, that on whomsoever I lay hands, he may receive the Holy Ghost.