Why God Did Not Respect Cain's Offering
Genesis 4:3–7 says God respected Abel and his offering but not Cain and his. The text gives no stated reason, so the warning God speaks to Cain carries the weight: the problem is in Cain himself, and he is responsible to master it.
Why Did God Favor Abel Over Cain?
Genesis never says in so many words why Yahweh respected Abel's offering and not Cain's. It shows God looking on the person and the offering together, then pressing Cain toward doing well instead of resentment.
Cain Kills Abel: Sin at the Door
Cain's killing of Abel is not a sudden explosion but the end of a road he was warned about. God names the crouching desire, calls Cain to rule over it, and then confronts the killer with questions before judgment falls.
Why Did God Reject Cain and His Offering?
Genesis 4:1–7 never gives a stated reason for rejecting Cain's offering. What it does show is that the rejection fell on Cain as well as on what he brought, and that God met his anger with a warning and an invitation rather than abandonment.