The sealing of the 144,000 has yet to take place. In the chronological order of Revelation, they are sealed during the first 3 1/2 years of that seven year period, prior to any of the trumpet judgments, which harm the earth, the trees and the sea. The scripture that you quoted regarding "putting my laws in their minds" is not the seal that the 144,000 receive. It is just misapplied scripture. It will be a visual seal on the forehead and that because those demonic beings that resemble locusts with stings like a scorpion, will be commanded to torment the inhabitants of the earth, except for the those who have the seal of God on their foreheads, which means that these demonic beings will see that seal.
Nothing from Revelation chapter 4 onward, which is the "what must take place later" has yet taken place. Revelation 4:1 is prophetic of the church being caught up, when that voice that sounds like a trumpet says "come up here." The 144,000 are sealed after this and after the seal plagues.
The only thing that happened in 70 AD was the destruction of the temple. All other plagues of wrath will take place after the church has been gathered and after the seven year agreement has been made.