These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
What Do You Mean, It's Not Didactic?: Besides the creation story (no, we are not going to open that can of worms here), there is Melchizedek, the High Priest who gave Abraham and Sarah bread, wine, and a blessing in the name of their God. Some uphold him as a metaphor or foreshadowing of Christ, others just see him as some priest-king-dude who did something nice for Abraham and Sarah.
Isaac. His own father almost killed him. Later, his wife Rebecca and son Jacob conspire against him to trick him into giving Jacob the blessing.
Hagar becomes Abraham's concubine with his wife Sarah's consent and bears him a much-desired son, Ishmael. Later, once Sarah herself conceives and gives birth to Isaac, she has Abraham evict Hagar and Ishmael, who have to wander around in the wilderness before God intervenes.