'Heaven' in the Bible

I searched in my heart how to cheer my flesh with wine, my heart yet guiding me with wisdom, and how to lay hold of folly, until I might see what it was good for the sons of men that they should do under heaven all the days of their lives.

For everything there is a season, and a time for every purpose under heaven:

Don't be rash with your mouth, and don't let your heart be hasty to utter anything before God; for God is in heaven, and you on earth. Therefore let your words be few.