Matthew 5:20

5:20 For I tell you, unless your righteousness goes beyond that of the experts in the law and the Pharisees, you will never enter the kingdom of heaven.

Matthew 18:3

18:3 and said, “I tell you the truth, unless you turn around and become like little children, you will never enter the kingdom of heaven!

Matthew 21:31

21:31 Which of the two did his father’s will?” They said, “The first.” Jesus said to them, “I tell you the truth, tax collectors and prostitutes will go ahead of you into the kingdom of God!

John 3:3

3:3 Jesus replied, “I tell you the solemn truth, unless a person is born from above, he cannot see the kingdom of God.”

John 3:5

3:5 Jesus answered, “I tell you the solemn truth, unless a person is born of water and spirit, he cannot enter the kingdom of God.

Acts 14:22

14:22 They strengthened the souls of the disciples and encouraged them to continue in the faith, saying, “We must enter the kingdom of God through many persecutions.”