Question: how isaac got his wife?
Answer: Before Isaac was 40 (Gen 25:20) Abraham sent Eliezer, his steward, into Mesopotamia to find a wife for Isaac, from his nephew Bethuel's family. Eliezer chose the Aramean Rebekah for Isaac. After many years of marriage to Isaac, Rebekah had still not given birth to a child and was believed to be barren.