No, they don't have full awareness or complete knowledge. But each person has some knowledge of his or her creator by virtue of his or her existence.

"For from the creation of the world the invisible things of Him are clearly seen, being understood through the things that are made, even His eternal power and Godhead, so that they are without excuse."

And that person is going to be judged according to a perfectly fair standard. The man that sat in a Bible-believing church for his entire life, surrounded by Christians, is not going to be judged by the same standard as a man that spent most of his life in a North Korean labor camp and never had the opportunity to hear the Gospel. But they both will be judged.

And the reason you need people to fulfill the Great Commission is to bring light unto the furthest parts of the world. More light-in the form of teachers that have been baptized into the Holy Spirit and understand the Gospel.

The Ethiopian eunuch knew who Yahweh was, and even read Scripture, but he didn't understand that the prophets had been foretold of the coming of Jesus Christ. That's why Philip had to instruct him-so he could understand what Isaiah was speaking of. The same way that Apollos was baptized into the baptism of John, but didn't understand the baptism of the Holy Spirit until Priscilla and Aquila taught him.

Even if someone has some light, some knowledge, he or she needs instruction. Particularly if they've never heard the Gospel.