In the Tower of Babel passage, we see the continued human rebellion against God, the desire of humanity to continue to oppose God and His commands. The human condition has not changed. We need a Redeemer to change our hearts.
God called Abram out of his homeland, away from his kindred, and his family to go to a land that God would show him. God appeared to Abram and in doing show showed that He will bridge the way between God and man.
Abram and Sarai deceived Pharaoh to protect Abram. Abram was supposed to be a blessing to the nations but he brought a curse upon Pharaoh and his household. Yet in this, God continued to bless him because of the covenant.
After their failure in Egypt, Abram, Sarai, and Lot return to Canaan and find that the land is not able to handle both Abram's and Lot's flocks and herds so they separate. Lot goes to the Jordan Valley, and settles near Sodom. The Lord renews His covenant with Abram showing that His covenant is based on God's faithfulness, not Abram's.
After Abram and Lot separated, Lot moved into Sodom. When Sodom was captured, Lot was taken away and he lost everything. Abram, trusting the LORD, took his men and attacked the invading armies defeating them and saving Lot.
How can Jesus who is not a Levite be a priest? Abram meets Melchizedek after this victory over the 4 kings. Through Melchizedek, we see different characteristics of who the Messiah would be. Jesus is the priest in the order of Melchizedek.
Abram returned from his military campaign against the 4 kings and he tithed to Melchizedek, the priest of the Most High God. Why did he do this? To give back to God what He has given us is worship.
In one of the most foundational promises in Scripture, we are told that Abram believed God and it was credited to him as righteousness. Paul shows us in the New Testament that this is foundational to the Christian faith, we have an imputed righteousness because of the word of Jesus, not becuase of our own doing.
God promised to give Abram and his descendants the land of Canaan but in the good, there's also a promise of struggle and his descendants would be sojourners and enslaved.
Abram and Sarai decide to help God fulfill His promise of descendants to Abram. Sarai gives her servant Hagar to Abram as a wife through whom she could have children. This was not God's plan and there are consequences. Yet we see God's grace and kindness to Hagar as He reveals Himself as the God who Hears and the God who Sees.
God gave Abraham and his descendants a sign of the covenant. Obedience is expected, not to earn the promise of God but because of it. In the same way, as Christians, we are to obey God's commands not to earn His grace, but as a result of it.
God changed Sarai's name to Sarah and promised that she, at 90 years old, would have a son named Isaac. This is anbelievable promise and one that causes Abraham to laugh. Yet what is impossible with man is easy for God.