The problem is in the "with all the heart" part. Only those given a new heart and new spirit (those born again), will search with all the heart and soul.
[Ecc 9:3 KJV]
3 This [is] an evil among all [things] that are done under the sun, that [there is] one event unto all: yea, also the heart of the sons of men is full of evil, and madness [is] in their heart while they live, and after that [they go] to the dead.
That is why no verse of scripture should taken on its own as defining true doctrine, So, no "point blank" after all.