A few things to keep in mind.
- Death is not a punishment for those who have faith in God.
- Those 70,000 were destined to die eventually. So God robbed them of nothing except some time, which Scripture compares to grass thrown into the fire. None of us is guarenteed tomorrow
In these points, I think that you might be overlaying Christian belief upon a yet-developing Judaism. There is little evidence that resurrection was a widely, or even a narrowly held view in David’s time (1,000-960 B.C.). The book of Job, written in the interim between David and Jesus (400-500 B.C.) gives no indication of a belief in the resurrection - actually quite the opposite:
Job 7:7-9
Douay-Rheims 1899 American Edition (DRA)
Remember that my life is but wind, and my eyes shall not return to see good things. Nor shall the sight of man behold me: thy eyes are upon me, and I shall be no more. As a cloud is consumed, and passeth away: so he that shall go down to hell shall not come up.
Indeed, the first use of the term “resurrection” is in the book of
2 Maccabees, which spans a time frame that is devoid of scripture in protestant (66 book) bibles:
**2 Maccabees 7:9
Douay-Rheims 1899 American Edition (DRA)
9And when he was at the last gasp, he said thus: Thou indeed, O most wicked man, destroyest us out of this present life: but the King of the world will raise us up, who die for his laws, in the resurrection of eternal life.
2 Maccabees 7:14
Douay-Rheims 1899 American Edition (DRA)
14And when he was now ready to die, he spoke thus: It is better, being put to death by men, to look for hope from God, to be raised up again by him: for, as to thee thou shalt have no resurrection unto life.
2 Maccabees 12:43
Douay-Rheims 1899 American Edition (DRA)
43And making a gathering, he twelve thousand drachms of silver to Jerusalem for sacrifice to be offered for the sins of the dead, thinking well and religiously concerning the resurrection, **
A millennium after David, the Pharisees had developed a belief in a resurrection, but the Saduccees held neither to the existence of angels, nor of the resurrection. I believe that it is safer to say that death, in David’s time, was held to be the end of the individual. Since the Hebrew kingdom was worldly, and the Kingdom of God had yet to be preached by the Son of Man, is it not more accurate to say that there was a willingness to fight for survival in David;'s day, versus the later Christian willingness to die in belief?