“He hath raised us up together, and made us sit together in heavenly places in Christ Jesus.”- Ephesians 2:6

That is very wonderful. We have not only left the dead, and become joined to Christ, but we are made to sit in heaven with Christ. A man is where his head is, is he not? And every believer is where his Head is; and if we are members of Christ’s body, we are in heaven. It is a very blessed experience to be able to walk on earth, and look up to heaven; but it is a higher experience to live in heaven, and look down on the earth; and this is what the believer may do. He may sit in the heavenlies; Christ is there as his Representative. The believer may take possession of what his Representative is holding on his behalf. Oh, to live in heaven, to dwell there, to let the heart be caught up from this poor life into the life that is above! This is where we should be, where we may be if we are quickened by the divine life.

We are in this position, that God is now working in us, through this divine life, to make us the most wonderful reflectors of His grace that He has yet formed. He has raised us up together, and made us sit together in heavenly places in Christ Jesus, “that in the ages to come He might shew the exceeding riches of His grace in His kindness toward us through Christ Jesus.” The ages to come will have for their wonder the quickened children of God. When God made the world, it was a wonder, and the angels came from afar to see His handiwork. But when Christ makes the new creation, they will say no more that God made the heaven and the earth, but they will say in higher strains, “He made these new-born men and women. He made for them, and in them, new heavens and a new earth.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2267.cfm