Hebrews 2:1

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

Hebrews 12:15

Look carefully that there be no one who falls back from the grace of God; that no root of bitterness springs up to trouble you, and by its means many become 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
For this reason we must pay the more earnest heed to the things which we have heard, for fear we should drift away.
Hebrews 12:15
Look carefully that there be no one who falls back from the grace of God; that no root of bitterness springs up to trouble you, and by its means many become defiled.