2 Samuel 24:8

Nine months and twenty days. This long period seems excessive, if nothing more was intended than merely counting the heads of the people, especially as the census was left unfinished. But there might very probably be difficulties with the aliens dwelling in Israel; and it is still more probable that there was a complete examination of all the military resources of the land. The result showed a very different state of things from that described in 1 Samuel 13:19-22 , and we can well understand the existence of much elation and war lust among the Israelites on the first flush of pride in their new empire.