Can we be in the invisible Spirit Realm; and see angels and heaven?

1. God was speaking to many people in the beginning.

God is a Spirit, he is omnipotent, and nobody could see him. God was talking to Adam, even after he was thrown out of the garden of Eden. Cain killed Abel his brother, he was a murderer and a sinner. Yet, God was talking to Cain. God spoke to sinners as well as to holy people. God was talking to many people until the time of Noah. Then, God talked to Abraham, Moses, and many of his prophets. We may notice that after the flood, God was speaking only to his servants, mainly to his prophets. But false prophets also said that God spoke to them. But it was not true. It is not explained how God spoke to people. We know that nobody can see God. Yet, we can hear him speak, if he speaks to us. Now a days, a whole lot of Christians say that God speaks to them. But it is just a cliché. Unless we hear a voice somehow, we are not hearing God. He may give us understanding, but it is not his speaking. If we take our understanding or our imagination as God is speaking to us, we are ignorant and we are wrong.

2. How do we get to know, discern, and see Spirits?

God has created us as souls. Then, God gives us the flesh body at our birth; and then he gives us our spirit body, which is born again of the spirit. Body is visible, tangible, and so it is real. Soul and spirit are neither visible nor tangible. However, they are also as real as our body is real. Air in the atmosphere is real even though we do not see the air. How do we know air is real? We hear the wind blows, we feel it in our body, we breath the air, and so on, and so air is real. We recognize air by our feelings, but not by seeing. So also, if the spirit manifests itself to us, we will know that the spirit is real. If we are born of the Spirit, then only we have the spirit. If we do not have the spirit, ask God and God will give you the spirit. This spirit is the holy spirit. If we follow the guidance of the spirit, we are spiritual. If we grow in the spirit, then the spirit world will become real to us. In this level, even God may become real to us, and we may be able to communicate with him to and fro. If you like to know more, you may study from this link. Born of the flesh is flesh: born of the Spirit is spirit: "Flesh Spirit." Body by Blood; Soul by Spirit; Born of:- Flesh, Spirit, Water, & God: "Soul."

3. Tangible incidents with Spirits, are Spiritual Reality.

God the Word became flesh and he lived as a complete 100% man. This is Jesus. He had the favor of God and he was approved of God. Just before he enters his ministry, he took water baptism under John the Baptist, and went to forty days fasting. "Matthew 4:1 says, Then was Jesus led up of the Spirit into the wilderness to be tempted of the devil." Notice, he was led by the Spirit to be tempted of the devil. We have no difficulty to understand this episode. Yet, we will not think about how did it happen in real life. Jesus was a man in the flesh, and the devil was a spirit being. They have dealt with each other, as both are real people. They had conversation, the devil took him to the holy city, to the pinnacle of the temple, to a high mountain, and showed him all the kingdoms of the world and the glory of them. Please look at it and see how did a flesh man and a spirit being dealt with each other, as man to man. It was because, for the man Jesus, the devil was as real as a man. This is called spiritual reality. Again, "Luke 10:18 says, And he said unto them, I beheld Satan as lightning fall from heaven." Even as a man, he saw the spirit Satan fall. So, he was able to see spirits, as we see the worldly things. These are the experiences that Jesus had when he was a man in the flesh. This is spiritual reality. Then in one instance, Jesus transfigured himself and his disciple saw him. "Matthew 17:1 And after six days Jesus taketh Peter, James, and John his brother, and bringeth them up into an high mountain apart, 2 And was transfigured before them: and his face did shine as the sun, and his raiment was white as the light. 3 And, behold, there appeared unto them Moses and Elias talking with him." His disciples; Peter, James, and John, saw Moses and Elias as men, with glory. They were heavenly people, who were in spirit, but not in flesh, and yet the disciples were able to see them. How could they see them? It was spiritual reality. We also may get into this spiritual reality.

4. Can you see or feel Spirits, Heaven, Hell, or demons?

Is the spirit world tangible to you? John says in "Revelation 1:10, I was in the Spirit on the Lord's day, and heard behind me a great voice, as of a trumpet," and so on. Then, he saw and heard all spiritual things, as things happening before him. So, the secret of spiritual reality is that we must be in the spirit 100% to the extend that we may not be aware of the flesh. Jesus was telling his disciples, in "John 14:15 If ye love me, keep my commandments. 16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever; 17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you." His disciples will obey his commandments. So, if we become his disciples, we will obey him. Then the Holy Ghost will abide in us according to these verses. Please notice; he is neither the holy spirit, nor one of the gifts from the baptism of the Holy Ghost; but he is the Holy Ghost himself, and he is God. If he abides in us, then we will be in the Spirit of him and then spirituality will be real to us, as much as the world is real to us. This is spirituality in a higher level. "Romans 8:9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his." This verse has two portions. Let us see the second portion first. It says that "Now if any man have not the Spirit of Christ, he is none of his." That is, if we have not received the holy spirit, that is, if we are not born again, we do not belong to Jesus Christ. But the first portion says something else, which is very important. It says, "ye are not in the flesh, but in the Spirit." He tells this not to us, because we live in the flesh. But he says this to a group of people, who live in their flesh body, just to do the ministry of God; and their spirits are the body of their souls. So, they live in the spirit realm; and so, they are in spiritual reality, as we are in the reality of the world. So, if God abides in us, we will be in the spirit realm; then angels, heaven, hell, and demons will also be real to us. This is spiritual reality.  So, give yourself to God. Let God abide in you. Then, the spirit realm will become real to you.