Avenged Sevenfold – Chapter Four lyrics

It's a reference to the murder of Cain, of course by Abel, in Genesis 4: 1-15, hence the title "Chapter Four," and various excerpts such as "punishment too great to bear," "from the soil his blood cries out to me," "out of the sight of the One," and being sent "far away from this land," referring to his exile in the land of Nod.
Incidentally, the band's name is arguably from this chapter, where God declared that "vengeance shall be taken on him [who kills Cain] sevenfold."

Yeah king of the sun and gvgeri got it right. This is probably my favorite song of theirs. They're not technically Christian music, but a lot of their songs promote it, such as this one.
Anyway, they're an amazing band, as I'm sure anyone reading this will agree.
Only thing I gotta add is that Cain killed Abel. King of the sun wrote it backwards, but I think everyone knew what he meant anyways so no big deal.

Adam[a] made love to his wife eve, and she became pregnant and gave birth to cain. [b] she said, “ with the help of the lord I have brought forth[c] a man. ” 2 later she gave birth to his brother abel.
Now abel kept flocks, and cain worked the soil. 3 in the course of time cain brought some of the fruits of the soil as an offering to the lord. 4 and abel also brought an offering— fat portions from some of the firstborn of his flock. The lord looked with favor on abel and his offering, 5 but on cain and his offering he did not look with favor. So cain was very angry, and his face was downcast.
6 then the lord said to cain, “ why are you angry? Why is your face downcast? 7 if you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must rule over it. ”.
8 now cain said to his brother abel, “ let’ s go out to the field. ”[d] while they were in the field, cain attacked his brother abel and killed him.
9 then the lord said to cain, “ where is your brother abel? ”.
“ I don’ t know, ” he replied. “ am I my brother’ s keeper? ”.
10 the lord said, “ what have you done? Listen! Your brother’ s blood cries out to me from the ground. 11 now you are under a curse and driven from the ground, which opened its mouth to receive your brother’ s blood from your hand. 12 when you work the ground, it will no longer yield its crops for you. You will be a restless wanderer on the earth. ”.
13 cain said to the lord, “ my punishment is more than I can bear. 14 today you are driving me from the land, and I will be hidden from your presence; I will be a restless wanderer on the earth, and whoever finds me will kill me. ”.
15 but the lord said to him, “ not so[e]; anyone who kills cain will suffer vengeance seven times over. ” then the lord put a mark on cain so that no one who found him would kill him.
The song is a reference to genesis chapter 4. Verses 1 to 15.

This song is amazing. This song tells the story of Cain and Abel. Cain was a farmer whilke his brother abel was a sheperd. The two brothers were asked to give a gift to God. God had not accepted Cain's gift because it was not pure and accepts Abel gift of a sacraficed lamb. Cain becomes so jealous of his brother Abel that he kills him. He lied about it to God when he has where Abel is. God punishes Cain for killing abel. He casts Cain out to roam the land while the earth will not be plentiful and provide him as good food. Cain was in fear he would be killed by the other people so God had made a mark on him that warned everyone not to kill him. The person who did kill him would suffer vengeance seven times over. Or as better known to the world. Avenged Sevenfold.