IMMEDIATELY FOLLOWING THE FALL of man, God makes a promise that one day a certain descendant of the woman will reverse the curse and make all things right again. As we read through Scripture, we will come to see and understand that the Descendant first mentioned in this original promise is the Promised One - Jesus the Christ.
In Genesis 5, we have the lineage of that promised descendant being traced from Adam to Noah. And while we are often tempted to skim quickly through genealogies in the bible, there are some very interesting observations that can be made from this initial genealogy in Genesis 5.
God preserves his word
If you pay careful attention to the ages of each man then you come to realize that Adam would have still been alive for each of these patriarchs' births with the exception of Noah. This means that Noah's father would have been able to give Noah a firsthand account of the creation, the fall, the promise made by God and everything else that had happened in history up to that point. Noah could have passed down all of pre-flood history to the generations after him with precise accuracy. God preserves His word.
God warns of his wrath
Enoch, who we are told was a God-fearing man, named his son Methuselah which in Hebrew has a meaning that implies 'his death shall bring judgement'. Interestingly enough, Methuselah dies in the same year as the global flood that was a judgement from God on account of the corruption of His creation. God warns of His wrath.
God is patient with his people
Methuselah, who's name is seemingly a prophetic warning about coming judgement, lives longer than any man in the history of civilization (969 years). God is patient with His people.
God offers salvation
Methuselah's son, Lamech, names his son, Noah, which in Hebrew has a meaning that implies 'he brings rest and a great blessing to his generation'. God offers salvation.
Thus, the first recorded lineage of the promised Descendant ends with the man who would offer his generation a great blessing and rest from their coming judgement (Noah). As we continue on in Genesis and throughout the entirety of the Old Testament, we see this lineage one day ends with the Son of Man who offers all generations the blessing of His life and salvation from their final judgement.
There's a practical lesson to be learned here that might help us and encourage us when we come across seemingly obscure passages in Scripture. Everything (even Old Testament genealogies) points to the good news of Jesus Christ and the plan of God to fulfill His original promise of restoring His cursed creation.