Acts 13:40
Beware then in case the prophetic saying applies to you:
Matthew 3:9-12
instead of presuming to say to yourselves, 'We have a father in Abraham.' I tell you, God can raise up children for Abraham from these stones!
Hebrews 2:3
how shall we escape the penalty for neglecting a salvation which was originally proclaimed by the Lord himself and guaranteed to us by those who heard him,
Hebrews 3:12
Brothers, take care in case there is a wicked, unbelieving heart in any of you, moving you to apostatize from the living God.
Hebrews 12:25
See that you do not refuse to listen to His voice. For if they failed to escape, who refused to listen to their instructor upon earth, much less shall we escape, if we discard Him who speaks from heaven.