Where did the giant come from in the bible?

Answer 1

In the King James version

the word - giant - appears 8 times

1. 2 Sam 21:16 And Ishbibenob, which was of the sons of the giant, the weight of whose spear weighed three hundred shekels of brass in weight, he being girded with a new sword, thought to have slain David.
2. 2 Sam 21:18 And it came to pass after this, that there was again a battle with the Philistines at Gob: then Sibbechai the Hushathite slew Saph, which was of the sons of the giant.
3. 2 Sam 21:20 And there was yet a battle in Gath, where was a man of great stature, that had on every hand six fingers, and on every foot six toes, four and twenty in number; and he also was born to the giant.
4. 2 Sam 21:22 These four were born to the giant in Gath, and fell by the hand of David, and by the hand of his servants.
5. 1 Chr 20:4 And it came to pass after this, that there arose war at Gezer with the Philistines; at which time Sibbechai the Hushathite slew Sippai, that was of the children of the giant: and they were subdued.
6. 1 Chr 20:6 And yet again there was war at Gath, where was a man of great stature, whose fingers and toes were four and twenty, six on each hand, and six on each foot and he also was the son of the giant.
7. 1 Chr 20:8 These were born unto the giant in Gath; and they fell by the hand of David, and by the hand of his servants.
8. Job 16:14 He breaketh me with breach upon breach, he runneth upon me like a giant.

Gath is also the home of the most famous biblical giant, Goliath.

the word - giants - appears 13 times

1. Gen 6:4 There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.
2. Num 13:33 And there we saw the giants, the sons of Anak, which come of the giants: and we were in our own sight as grasshoppers, and so we were in their sight.
3. Deu 2:11 Which also were accounted giants, as the Anakims; but the Moabites called them Emims.
4. Deu 2:20 (That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims;
5. Deu 3:11 For only Og king of Bashan remained of the remnant of giants; behold his bedstead was a bedstead of iron; is it not in Rabbath of the children of Ammon? Nine cubits was the length thereof, and four cubits the breadth of it, after the cubit of a man.
6. Deu 3:13 And the rest of Gilead, and all Bashan, being the kingdom of Og, gave I unto the half tribe of Manasseh; all the region of Argob, with all Bashan, which was called the land of giants.
7. Jos 12:4 And the coast of Og king of Bashan, which was of the remnant of the giants, that dwelt at Ashtaroth and at Edrei,
8. Jos 13:12 All the kingdom of Og in Bashan, which reigned in Ashtaroth and in Edrei, who remained of the remnant of the giants: for these did Moses smite, and cast them out.
9. Jos 15:8 And the border went up by the valley of the son of Hinnom unto the south side of the Jebusite; the same is Jerusalem: and the border went up to the top of the mountain that lieth before the valley of Hinnom westward, which is at the end of the valley of the giants northward:
10. Jos 17:15 And Joshua answered them, If thou be a great people, then get thee up to the wood country, and cut down for thyself there in the land of the Perizzites and of the giants, if mount Ephraim be too narrow for thee.
11. Jos 18:16 And the border came down to the end of the mountain that lieth before the valley of the son of Hinnom, and which is in the valley of the giants on the north, and descended to the valley of Hinnom, to the side of Jebusi on the south, and descended to Enrogel,

As can be seen, many of the references just state that the giants "were", without saying where - or how - they originated.