People today have many ideas when it comes to the realm of religion.
And as many as the religions are today in the world, man has come up with that many ways to try and worship Jehovah God. Man must be in a right relationship with God before his worship is pleasing to God. When Abel brought forth his sacrifice to God, he was found acceptable in God's sight. Notice what the Bible says about his sacrifice. We find that Abel had worshipped God acceptable.