When does the tribulation of Israel begin? after the seventh seal is opened
This is interesting. Why do you think that Israel's time of trouble would start at the 7th seal?
I think that most would say that it started at the first seal, or at the door 4:1-2.
Why the 7th seal?
I think that the seals are the time after Israel rejected the gospel kingdom in 37 ad (approx). And the the 6/7th seals is the dest of Jeru in 70 ad, followed by the trumpets.
How long does the tribulation of Israel last? less than 7 years
It never really says that the 7 times are 7 years. I mean that there is no verse that says that, "the 7 times are 7 years."
The 42 months and 1260 days mentioned in the Rev are symbolic numbers, in symbolic passages.
The 2 witnesses are not 2 people, and the woman is not one literal woman, both symbolize Israel.
The 7 times are an indeterminate number to men, a time set by God, until revealed. Daniel 4:25, 32, 34.
When does the tribulation of Israel end? At Jesus second coming.
At the 7th trumpet? yes/no?
What happens after the tribulation of Israel is over? The Millennium.
For those who are Christians, the mill is from the day of Pentecost until now, the time of the kingdom on earth. After Jesus comes for the kingdom, there will be no more planet except fire.
For Israel, the time of Jacob's trouble was from the rejection of the kingdom until they were restored to Jerusalem.
Rome is the beast, the iron legs.
The 7 trumpets are against Israel after the flesh for not accepting the kingdom. They show the relationship between God and Israel after the flesh, the natural branches that were cut off.