Bible Verses About Sacrifices: Were accepted when offered in sincerity and faith

And Abel, he also brought of the firstlings of his flock and of the fat thereof. And Jehovah had respect unto Abel and to his offering:

And Jehovah smelled the sweet savor; and Jehovah said in his heart, I will not again curse the ground any more for man’s sake, for that the imagination of man’s heart is evil from his youth; neither will I again smite any more everything living, as I have done.

By faith Abel offered unto God a more excellent sacrifice than Cain, through which he had witness borne to him that he was righteous, God bearing witness in respect of his gifts: and through it he being dead yet speaketh.