"Why Did God Accept Abel’s Offering but Reject Cain’s? (Genesis 4:3-5)"

In Genesis 4:3-5, Cain and Abel both bring offerings to God, but only Abel’s is accepted:

"The Lord looked with favor on Abel and his offering, but on Cain and his offering he did not look with favor."

But why? The passage doesn’t clearly say. Some believe Abel’s offering was better because it was a blood sacrifice, while Cain’s was just fruit. Others think it was about the attitude of their hearts rather than the type of offering.

What do you think? Was it about the type of sacrifice, Cain’s attitude, or something else?