Titus 1:2

and is based on the hope of Immortal Life, which God, who never lies, promised before the ages began,

Hebrews 2:1-3

Therefore we must give still more heed to what we were taught, for fear we should drift away.

Treasury of Scripture Knowledge

Summary

But if ye refuse and rebel, ye shall be devoured with the sword: for the mouth of the LORD hath spoken it.

If ye refuse

For the mouth

Bible References

If ye refuse

Hebrews 2:1
Therefore we must give still more heed to what we were taught, for fear we should drift away.

For the mouth

Titus 1:2
and is based on the hope of Immortal Life, which God, who never lies, promised before the ages began,