For your own Bible Study, prayer and reflection, I'm going to wade into these waters with Scripture. And, when I offer my own opinion, I will designate it as my opinion.
Can people in heaven see us?
On the shelf in my office, I have photographs of all four of my deceased grandparents. I loved every one of them and each of them contributed to who I am today. They are all dead and gone, and I believe they are each in heaven. As I learn things about the two of died when I was a boy, the more I am at peace with them being in heaven.
But, the photographs make me wonder: Are they watching me from heaven? Are they disgusted by my life and decisions? Do they hurt when I hurt? When I laugh, does it make them happy?
Some believe that those in heaven can see us here on Earth. The Bible doesn't say they can't see us. Some anchor this thinking in Hebrews 12:1, which says, "Since we are surrounded by a cloud of witnesses . . ." But, in my opinion, that verse is often taken out of context. I believe this "cloud of witnesses" is less about heavenly spies and more about remembering the lives of faith that serve as a testimony (or witness) to us today.
Revelation 21:4 reminds us that there is no grief, tears or unhappiness in heaven. If our loved ones can look upon us, living in a sinful state, would not our actions and words bring them a measure of unhappiness and sadness? Yes, it would. My Mema would be very distressed at some of the things that I say and do. Because that anxiety can't exist in heaven, I don't believe my Mema is watching me. I believe she is caught up in the fellowship of heaven and in fellowship with our God.
Others say that those in heaven are aware of some Earthly occurrences. In Luke 15:7, Jesus says, “heaven will be happier over one lost sinner who returns to God” implying that all of heaven will know of this activity on Earth and celebrate it. In Luke 15:10, Jesus says, “In the same way, there is joy in the presence of God’s angels when even one sinner repents.” Because humans are not angels in heaven (read below), Luke 15:10 implies that humans - in the presence of angels - experience joy over repentance.
My opinion is this: People in heaven are not watching us here on Earth, but when someone on Earth - through receiving the gift of salvation and knowing Jesus as Savior - comes to faith then all of heaven is aware of it. Celebration occurs.
Are people in heaven interacting with us here on Earth?
We know that angels can and have interacted with us here on Earth. In Luke 19:28-44, the angel named Gabriel interacted with Mary. in Hebrews 13:2, we read that there are "angels unaware" among us today.
But, you and I don't become angels when we die. Angels are spiritual beings created by God to be His servants and messengers. He's given them great authority and power to do His will. Psalm 8:5 says that God made humans "a little lower than the heavenly beings."
But, when people go to heaven, 1 Corinthians 6:3 says that we will judge the angels, implying that our heavenly status in greater than the angels. You and I do not become angels when we die.
Laying that issue aside, leads us to this one: Can we communicate with our loved ones who are in heaven?
These are dangerous waters.
I believe that you and I can have dreams and visions of heaven, and in those dreams we may be permitted by the Holy Spirit to see our loved ones. I've had those dreams, some of you have, too, and mine have brought me a great measure of peace and comfort that I know could only come from the Holy Spirit.
I believe, too, that there's nothing wrong with going to a family member's grave site and talking to loved ones as if they are there. There's nothing wrong with going to a grave site, and saying, "I miss you, and let me tell you what's going on in my life." Does that message get to heaven? I don't know. If communicating that way brings you peace of mind, well, I find nothing wrong with it. The peace is coming from the Holy Spirit knowing your pain and bringing comfort to you - not from an interaction with your loved ones.
In all of this, there is a thin veil that I believe is very, very dangerous.
Satan loves to intersect us in grief and feelings of despair.
Praying to loved ones is heresy. Asking loved ones to "do things" for you in heaven, to talk with God for you, to come down and give you "signs" on Earth - that's borderline occult, in my opinion.
1 Timothy 2:5 says, "For there is only one God and one Mediator (Jesus) who can reconcile with God and people. His name is Christ Jesus."
A good rule of thumb is to talk to deceased loves ones, but don't ask them to do anything for you (even to bring you comfort - only Jesus provides comfort that we need from the heavenly realm) or to communicate with you.
Deuteronomy 18:9-14 warns us that "anyone involved in mysticism is an object of horror and disgust to the Lord." I would even extend that to practices that call upon loved ones to “be with us” during this time – however innocent things might seem. I’d be very careful about leaving an empty seat for grandma at the Mother’s Day lunch table, and acknowledging that she’s sitting there. Hearing a loved one through wind chimes or a bird outside the door is mysticism, my opinion.
Satan will use anything he can, especially during times of grief, to look for peace and comfort anywhere and everywhere but the arms of Jesus.
My counsel to you is this: Celebrate and remember the lives of loved ones. Know that as a believer, you will be in the company of loved ones in heaven one day. Let them go enjoy heaven until you get there. Find peace in your Savior and comfort in the loved ones still here with you. Don’t get consumed with holding on to those who have died and gone in unhealthy ways.