Did Adam see God the Father because Adam was without a sin? Also, after Resurrection, will we be able to see God (the Father) because we will have a glorified body like the Lord Jesus Christ?
God created Adam to glorify Him. "Everyone who is called by My name, whom I have created for My Glory; I have formed him, yes, I have made him."(Is 43:7) God created us in His image only and likeness and He created all other creations for our service: "So God created man in His own image; in the image of God, He created him, male and female He created them." (Gen 1:27)
The Holy Gospel of St. John 1:18 states, "No one has seen God at any time." No one has had a direct vision of the nature of God. Yet to see God is to die (Ex 33:20). Moses saw only the "back" of God. Isaiah beheld God's Glory (Is 6:1). Thus to see God in His essence is to be God; the Son who is in the bosom of the Father can declare God. He is the One with the Father, and He (together with the Holy Spirit) sees the Father in His essence. As Light of Light, the Lord Jesus Christ reveals the Father. When we see the Lord Jesus Christ we see the Father.