Last session we looked at agape love, God’s unconditional, selfless love that sets us apart as Christians. Now we’re going to look at the legacy of relationships in the Bible. Every relationship goes back to the heart of God. Agape love comes from who God is, and our relationships are made to reflect the perfect unity between the Father, the Holy Spirit and Jesus. Before the world was made, they were already one. In this session we’ll see why these first relationships matter and how they shape the way we relate to each other.
The Trinity: The First Relationship
Relationships in the Bible start in the heart of God. Our relationships should look like the unity of the Father, Holy Spirit and Jesus. Before anything was created, the three of them were together in perfect harmony. That relationship came before Adam and Eve, before the universe itself.
Genesis 1:1 states, “In the beginning, God,” showing that the Father was there before heaven and earth were made. Genesis 1:2 says, “the spirit of God hovered over the face of the waters,” showing the Holy Spirit was there before the earth was formed. In Hebrews 1:1-2, we learn that Jesus was also there before the world was created.
So the first relationship was between the Father, the Holy Spirit and Jesus, before anything else existed. As we go through this study, you’ll see that everything we know about relationships starts with the Father, flows through Jesus and the Holy Spirit, and comes back to the Father.
Adam and Eve: The First Husband and Wife
The whole story of the Bible is built on relationships, and the first one led to more. It started when God made man. But man alone wasn’t enough. Like God, we were made to live in relationship. God is love, and love needs someone to love.
Genesis 2:20 (NKJV) reads, “So Adam gave names to all cattle, to the birds of the air, and every beast of the field. But for Adam, there was not found a helper comparable to him.” Adam needed a companion.
God also gave mankind responsibility for the earth, as Genesis 1:28 (NKJV) says: “Then God blessed them, and God said to them, ‘Be fruitful and multiply; fill the earth and subdue it; have dominion over the fish of the sea, over the birds of the air, and over every living thing that moves on the earth.’”
Then we see the first human relationship: Adam and Eve. Adam wasn’t meant to rule the earth by himself, and ruling wasn’t his only job. He was also meant to multiply, and for that he needed Eve. Together they were given the job to be fruitful, increase and take care of the earth.
Love, which is who God is, always involves a choice. So in human relationships we see a big decision: follow God’s way or don’t. Adam and Eve had Cain, and he carried the same pull toward disobedience we saw in Adam’s fall.
Cain and Seth: The First Legacies
The Bible is full of stories about people, families and how they relate. Two brothers stand out: Cain and Seth. The Bible follows each of their family lines, and through them we learn a lot about relationships and how they affect the world around us.
Cain’s Lineage: The Path of Defiance
Cain’s story starts in a personal and tragic way. He committed the first murder in the Bible, killing his brother Abel out of envy and anger (Genesis 4:8). That choice, driven by anger and no respect for life or relationship, set the tone for his descendants.
All through the Bible we see that rebellious, violent streak keep going in Cain’s line. By Noah’s day it’s obvious. Genesis 6:5 describes a world where “every inclination of the thoughts of the human heart was only evil all the time”. The world had wandered so far from God that He sent a flood to wipe the earth clean.
Even after the flood, people kept defying God. Look at the Tower of Babel in Genesis 11. The people wanted power and independence from God, so they decided to “make a name for themselves” by building a tower up to heaven. That pride and disobedience is the spirit of Cain’s line.
At the end of the Bible, in Revelation, we meet the Harlot Babylon. Revelation 17:5 shows her as a picture of a society living in total defiance of God. It’s full of pride, self-indulgence and rejecting God’s commands on purpose, the result of the sinful choices of the people who live there.
Cain’s legacy shows us a road that leads to a society that walks away from God and trades love and respect for pride and defiance.
Seth’s Lineage: The Path of Faithfulness
Now let’s look at Seth. Unlike Cain, Seth’s line is a great example of faithfulness and devotion to God.
Seth’s descendants include Noah, who found favor with God in a wicked generation (Genesis 6:8-9). They also include Abraham, Isaac and Jacob, who entered a covenant relationship with God and laid the foundation for the nation of Israel.
On top of that, the family line in Luke 3:23-38 traces Jesus Christ, the Savior of the world, back to Seth. Seth’s line is tied to God keeping His promise of redemption and eternal life.
Revelation also gives us the opposite of the Harlot Babylon: the New Jerusalem (Revelation 21:2). The New Jerusalem is a holy city, prepared like a bride for her husband. It’s a picture of a society living in step with God’s will and honoring His commands. It’s marked by purity, faithfulness and righteousness, the same things that mark a godly relationship.
What Lessons Do These Stories Teach Us?
So what do Cain and Seth teach us about our relationships? These stories push us to take an honest look. Do my actions look more like Cain’s defiance or Seth’s faithfulness? Am I adding to the chaos of Babylon, or am I building toward the peace and godliness of the New Jerusalem?
Godly relationships, like we see in Seth’s line, are marked by love, respect and faithfulness. Most of all, they require obeying God’s commands. As believers, we’re called to bring these into every relationship we have.
The Bible gives us a clear choice: Cain’s path of rebellion or Seth’s path of faithfulness. When we follow Seth’s example and build godly relationships, we help make the world more loving, respectful and godly, a little more like the New Jerusalem.
