Hebrews 2:1

Therefore it behooves us the more earnestly to give heed to the things which we have heard, lest at some time we may leak out.

Hebrews 12:15

looking diligently lest any one may fail from the grace of God; lest any root of bitterness springing up may trouble you, and through it many may be defiled;

Treasury of Scripture Knowledge

Summary

But Jehu took no heed to walk in the law of the LORD God of Israel with all his heart: for he departed not from the sins of Jeroboam, which made Israel to sin.

Took no heed

Bible References

Took no heed

Hebrews 2:1
Therefore it behooves us the more earnestly to give heed to the things which we have heard, lest at some time we may leak out.
Hebrews 12:15
looking diligently lest any one may fail from the grace of God; lest any root of bitterness springing up may trouble you, and through it many may be defiled;