Hebrews 2:1-3

For this reason we ought to pay the more earnest heed to the things which we have heard, for fear we should drift away from them.

Hebrews 10:28-29

Any one who bids defiance to the Law of Moses is put to death without mercy on the testimony of two or three witnesses.

Hebrews 12:25

Be careful not to refuse to listen to Him who is speaking to you. For if they of old did not escape unpunished when they refused to listen to him who spoke on earth, much less shall we escape who turn a deaf ear to Him who now speaks from Heaven.

Treasury of Scripture Knowledge

Summary

Now they that died in the plague were fourteen thousand and seven hundred, beside them that died about the matter of Korah.

Bible References

Fourteen thousand

Hebrews 2:1
For this reason we ought to pay the more earnest heed to the things which we have heard, for fear we should drift away from them.
Hebrews 10:28
Any one who bids defiance to the Law of Moses is put to death without mercy on the testimony of two or three witnesses.
Hebrews 12:25
Be careful not to refuse to listen to Him who is speaking to you. For if they of old did not escape unpunished when they refused to listen to him who spoke on earth, much less shall we escape who turn a deaf ear to Him who now speaks from Heaven.