The Grace Message with Dr. Andrew Farley - Tribulation. Rapture. Judgment.

How does the tribulation relate to the return of Christ? And what happens regarding the rapture and the final judgment? My husband and I were reconciled after being separated for nine years, and you married us. Thank you! How should we interpret Genesis 6:4 regarding "sons of God," "daughters of men," "giants" and "men of renown"?