Genesis 4:4

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

Hebrews 11:4

By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaks.

Exodus 13:12

That you shall set apart unto the LORD all that opens the womb, and every firstling that comes of a beast which you have; the males shall be the LORD'S.

Numbers 18:17

But the firstling of a cow, or the firstling of a sheep, or the firstling of a goat, you shall not redeem; they are holy: you shall sprinkle their blood upon the altar, and shall burn their fat for an offering made by fire, for a sweet aroma unto the LORD.

Proverbs 3:9

Honor the LORD with your substance, and with the firstfruits of all your increase:

Genesis 15:17

And it came to pass, that, when the sun went down, and it was dark, behold a smoking furnace, and a burning lamp that passed between those pieces.

Leviticus 3:16-17

And the priest shall burn them upon the altar: it is the food of the offering made by fire for a sweet aroma: all the fat is the LORD'S.

Leviticus 9:24

And there came a fire out from before the LORD, and consumed upon the altar the burnt offering and the fat: which when all the people saw, they shouted, and fell on their faces.

Numbers 16:35

And there came out a fire from the LORD, and consumed the two hundred and fifty men that offered incense.

Numbers 18:12

All the best of the oil, and all the best of the wine, and of the wheat, the first fruits of them which they shall offer unto the LORD, them have I given you.

Judges 6:21

Then the angel of the LORD put forth the end of the staff that was in his hand, and touched the meat and the unleavened cakes; and there rose up fire out of the rock, and consumed the meat and the unleavened cakes. Then the angel of the LORD departed out of his sight.

1 Kings 18:24

And call you on the name of your gods, and I will call on the name of the LORD: and the God that answers by fire, let him be God. And all the people answered and said, It is well spoken.

1 Kings 18:38

Then the fire of the LORD fell, and consumed the burnt sacrifice, and the wood, and the stones, and the dust, and licked up the water that was in the trench.

1 Chronicles 21:26

And David built there an altar unto the LORD, and offered burnt offerings and peace offerings, and called upon the LORD; and he answered him from heaven by fire upon the altar of burnt offering.

2 Chronicles 7:1

Now when Solomon had made an end of praying, the fire came down from heaven, and consumed the burnt offering and the sacrifices; and the glory of the LORD filled the house.

Psalm 20:3

Remember all your offerings, and accept your burnt sacrifice; Selah.

Hebrews 9:22

And almost all things are by the law purged with blood; and without shedding of blood is no remission.

1 Peter 1:19-20

But with the precious blood of Christ, as of a lamb without blemish and without spot:

Revelation 13:8

And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.

Treasury of Scripture Knowledge

Summary

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

Bible References

The firstlings

Exodus 13:12
That you shall set apart unto the LORD all that opens the womb, and every firstling that comes of a beast which you have; the males shall be the LORD'S.
Numbers 18:12
All the best of the oil, and all the best of the wine, and of the wheat, the first fruits of them which they shall offer unto the LORD, them have I given you.
Proverbs 3:9
Honor the LORD with your substance, and with the firstfruits of all your increase:
Hebrews 9:22
And almost all things are by the law purged with blood; and without shedding of blood is no remission.
1 Peter 1:19
But with the precious blood of Christ, as of a lamb without blemish and without spot:
Revelation 13:8
And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.

Fat

Leviticus 3:16
And the priest shall burn them upon the altar: it is the food of the offering made by fire for a sweet aroma: all the fat is the LORD'S.

Had

Genesis 15:17
And it came to pass, that, when the sun went down, and it was dark, behold a smoking furnace, and a burning lamp that passed between those pieces.
Leviticus 9:24
And there came a fire out from before the LORD, and consumed upon the altar the burnt offering and the fat: which when all the people saw, they shouted, and fell on their faces.
Numbers 16:35
And there came out a fire from the LORD, and consumed the two hundred and fifty men that offered incense.
Judges 6:21
Then the angel of the LORD put forth the end of the staff that was in his hand, and touched the meat and the unleavened cakes; and there rose up fire out of the rock, and consumed the meat and the unleavened cakes. Then the angel of the LORD departed out of his sight.
1 Kings 18:24
And call you on the name of your gods, and I will call on the name of the LORD: and the God that answers by fire, let him be God. And all the people answered and said, It is well spoken.
1 Chronicles 21:26
And David built there an altar unto the LORD, and offered burnt offerings and peace offerings, and called upon the LORD; and he answered him from heaven by fire upon the altar of burnt offering.
2 Chronicles 7:1
Now when Solomon had made an end of praying, the fire came down from heaven, and consumed the burnt offering and the sacrifices; and the glory of the LORD filled the house.
Psalm 20:3
Remember all your offerings, and accept your burnt sacrifice; Selah.