Ex:chapter 7 vs 6 “All the livestock of the Eqyptians died”
then in chapter 9 vs 3 “the LORD will afflict all your livestock”
Where did the livestock in ch 9 come from ?
It seems likely that the span of time between some of the successive afflictions was, at times, as long as a year or a few years. We always imagine that successive verses in Scripture occurred immediately after one another, but such is not the case. So the livestock were replenished over the course of time from other regions.
For example:
[Jeremiah 27]
{27:1}
In the beginning of the reign of Jehoiakim, the son of Josiah, the king of Judah, this word came to Jeremiah from the Lord, saying:
{27:2} “Thus says the Lord to me: Make bands and chains for yourself. And you shall place them on your neck.
{27:3} And you shall send them to the king of Edom, and to the king of Moab, and to the king of the sons of Ammon, and to the king of Tyre, and to the king of Sidon, by the hand of the messengers who came to Jerusalem,
to Zedekiah, the king of Judah.
Clearly a number of years has passed between verse 1-2 and verse 3. The prophet was prophesying for a number of years wearing chains as a visible sign accompanying his prophecy, then finally he sends these to various kings, as the exclamation point at the end of that series of prophecies.