Passage
Say unto them, As surely as I live, saith Jehovah, if I do not do unto you as ye have spoken in mine ears!
Numbers 14:28 (DBY)
Nearby Context
Numbers 14:26 And Jehovah spoke to Moses and to Aaron, saying,
Numbers 14:27 How long [shall I bear] with this evil assembly, which murmur against me? I have heard the murmurings of the children of Israel, which they murmur against me.
Numbers 14:28 Say unto them, As surely as I live, saith Jehovah, if I do not do unto you as ye have spoken in mine ears!
Numbers 14:29 In this wilderness shall your carcases fall; and all that were numbered of you, according to your whole number from twenty years old and upwards, who have murmured against me,
Numbers 14:30 shall in no wise come into the land, concerning which I have lifted up my hand to make you dwell in it; save Caleb the son of Jephunneh, and Joshua the son of Nun.
Study Lenses
The verse centers on "surely", "live", "saith", "jehovah", "spoken", "mine", and "ears". It is saying that the verse draws attention to "surely" and "live", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 27's "How long shall I bear with this..." into verse 29's "In this wilderness shall your carcases fall...", so "surely" and "live" belong inside that flow. In Numbers context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "surely" and "live" with trust shaped by these words, not by a vague optimism outside the passage.