New Living Translation
So we must listen very carefully to the truth we have heard, or we may drift away from it.

American Standard Version
Therefore we ought to give the more earnest heed to the things that were heard, lest haply we drift away from them .

Berean Study Bible
We must pay closer attention, therefore, to what we have heard, so that we do not drift away.

Douay-Rheims Bible
Therefore ought we more diligently to observe the things which we have heard, lest perhaps we should let them slip.

English Revised Version
Therefore we ought to give the more earnest heed to the things that were heard, lest haply we drift away from them.

King James Bible
Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.

World English Bible
Therefore we ought to pay greater attention to the things that were heard, lest perhaps we drift away.

Young's Literal Translation
Because of this it behoveth us more abundantly to take heed to the things heard, lest we may glide aside,

Hebrews 2:1 Additional Translations ...