I am so glad you are studying with me. I checked out Matthew Henry’s commentary on Biblegateway.com and also the Bible knowledge commentary and there are some different thoughts on this passage but both agreed that this is after the 1,000 year reign of Christ talked about in Rev. 20. It appears to describe what it will be like for us in eternity with God! This is after the destruction of the world as we know it and Christ’s 1,000 year reign.
If God gives you more information I would love to have it too. Thank you so much for studying with me. I am going at a snails pace but it is such a blessing to be doing it together! Much love!