You also seem exasperated by this dude... then he goes on to kiss your wild ass.

The Bible does not give a direct answer to the question of Isaac’s age when he was about to be offered as a sacrifice by his father. We therefore must conclude that neither our understanding of the passage nor our grasp of the points that God wants us to learn depend on knowing his age. However, some linguistic data are available that shed some light on the matter by pointing us in the direction of Isaac being older than we normally think, i.e., 20+.

In the first place, consider the details pertaining to chronology. Sarah gave birth to Isaac when she was 90 years old (Genesis 17:17). She would have been 92 or 93, 95 at most, when Isaac was weaned. She died at age 127 (Genesis 23:1)—when Isaac was 37 years old. Following Isaac’s birth, the events of the rest of Genesis chapter 21 (i.e., the driving out of Hagar and Ishmael, and the incident with Abimelech), as well as the events of chapter 22, all occurred during a 35-year period (approximately). Notice the expression “many days” in Genesis 21:34, as well as the phrase “after these things” in 22:1. These allusions would suggest that some time had elapsed prior to the offering of Isaac.

In the second place, the term “lad” used to refer to Isaac (21:5,12) is a flexible Hebrew term that does not necessarily refer to what we ordinarily think of—i.e., a boy. Rather, the term encompasses a wide range of meanings—from a baby (e.g., Exodus 2:6; 2 Samuel 12:16) to a young man (e.g., Absalom in 2 Samuel 14:21; 18:5). It even can refer to “servant” or “attendant” (e.g., 2 Samuel 16:1) as well as soldier/leader (1 Kings 20:14,15,17,19). Look closely at the context of the Isaac passage in 22:5 where the servants that accompanied Abraham and Isaac are referred to as “young men” (22:3,5,19). The word “servants” is precisely the same term that is used in verses 5 and 12 to refer to Isaac (cf. Gesenius, 1979, p. 555; Wigram, 1980, p. 823; Harris, et al., 1980, 2:585-586). Were the servants that accompanied Abraham 5 to 7 year olds? Or were they older?

Third, Isaac was given the task of carrying the wood for the impending sacrifice (22:6). There would have been enough wood to consume a human body when set on fire. Could a 5- to 7-year-old child carry such a burden?

It points to Isaac being a young man—not a young boy.

All your explanations have no meaning when the Bible contradicts itself when it calls Isaac Abraham's only son...

Its like its trying to hide something!

The only time Abraham had one son was when he had Ishmael before Isaac was born!

And it came to pass after these things, that God did tempt Abraham, and said unto him, Abraham: and he said, Behold, here I am.

2 And he said, Take now thy son, thine only son Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt offering upon one of the mountains which I will tell thee of.

Contradiction galore!