Adam walked with God and even after he tried to hide Adam walked with God and had direct contact, God has been speaking to man dia his Spirit, Word and Prophets, preachers and teachers from day one.....I really think many go to seed and over emphasize what really took place in Acts and the N.T. when it comes to the Spirit of God. What took place is the HOLY SPIRIT taking the place of JESUS as the guide/comforter of the church.
Note the following....and none are any different than what took place in the N.T.
For no prophecy was ever made by an act of human will, but men moved by the Holy Spirit spoke from God
The Spirit of the LORD spoke through me; His word was on my tongue.
You spoke by the Holy Spirit through the mouth of Your servant, our father David: ’Why do the nations rage and the peoples plot in vain?
Then the Spirit of the LORD fell upon me, and He said to me, "Say, 'Thus says the LORD, "So you think, house of Israel, for I know your thoughts.
As for me, however, I am filled with power by the Spirit of the LORD, with justice and courage, to declare to Jacob his transgression and to Israel his sin.
Note the following....and none are any different than what took place in the N.T.
For no prophecy was ever made by an act of human will, but men moved by the Holy Spirit spoke from God
The Spirit of the LORD spoke through me; His word was on my tongue.
You spoke by the Holy Spirit through the mouth of Your servant, our father David: ’Why do the nations rage and the peoples plot in vain?
Then the Spirit of the LORD fell upon me, and He said to me, "Say, 'Thus says the LORD, "So you think, house of Israel, for I know your thoughts.
As for me, however, I am filled with power by the Spirit of the LORD, with justice and courage, to declare to Jacob his transgression and to Israel his sin.
But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people. (Jer 31:33)
A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them. (Eze 36:26-27)
For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people: (Heb 8:10)
It sounds like a 'new thing' that God had not done to His people in previous generations.