Genesis 11:4-6 says, “Then they said, ‘Come, let us build ourselves a city, with a tower that reaches to the heavens, so that we may make a name for ourselves; otherwise we will be scattered over the face of the whole earth.’ But the LORD came down to see the city and the tower the people were building. The LORD said, ‘If as one people speaking the same language they have begun to do this, then nothing they plan to do will be impossible for them.'”
Can the Sky Be Achieved?
I’m not sure what your question is with this verse, but I’ll attempt an answer. What the people said here is of no consequence. Their vain and failed attempt to build a tower that reached to the heavens doesn’t matter. The only universal truth we can discern from this passage is what God said. God did not really address whether or not the sky can be achieved.
Technically, what God said was that as long as all people spoke the same language, then nothing they do will be impossible for them. As a result, in verses 7 through 9, he confused their language and scattered them according to their various languages. So, today, the “nothing will be impossible” clause does not apply to us, because we are no longer united by a common language. However, the Bible is clear that only God is omnipotent, and man, in his sinful nature, is quite helpless in many respects. So, it has never been “possible” for man to do anything and everything, even before his language was confused.
However, yes, in terms of airplanes and space travel, the sky can be “achieved,” with limitations.