Where did Abraham go to find a wife for his son Isaac?

A:Like Abraham before him, and then Jacob, Isaac could not marry any of the mortals in the land, so Abraham sent a servant to his former city of Haran to find a wife for Isaac. The servant found a young maiden at the nearby town of Nahor. Rebekah, the chosen wife, was the daughter of Bethuel and Milcah, which in Akkadian was a title given to Ishtar, the moon god's daughter. Genesis 24:15 says that Bethuel was Abraham's nephew and Genesis 11:29 says that Milcah was the daughter of Haran, and therefore Abraham's niece. According to Genesis, Rebekah was a surprisingly close relative to Isaac.

Haran was the city of the moon-god Sin and Nahor means "Light or lamp", suggestive of the moon, but is also the name of the Abraham's brother. As many of the family had names closely associated with the moon, the family of the Hebrew patriarchs were, at the very least, devout followers of the moon god.

Another Answer:

In Genesis 24:10, it says Isaac was sent to the Mesopotamian cith of Nahor. He did not want to mix the now called line of his descendants to those of the unrighteous peoples of Canaan. He was following God's promise.

Genesis 24:1-4New King James Version (NKJV) A Bride for Isaac24 Now Abraham was old, well advanced in age; and the Lord had blessed Abraham in all things. 2 So Abraham said to the oldest servant of his house, who ruled over all that he had, "Please, put your hand under my thigh, 3 and I will make you swear by the Lord, the God of heaven and the God of the earth, that you will not take a wife for my son from the daughters of the Canaanites, among whom I dwell; 4 but you shall go to my country and to my family, and take a wife for my son Isaac."