Charles Ellicott Commentary Genesis 16:3

"And Sarai, Abram`s wife, took Hagar the Egyptian, her handmaid, after Abram had dwelt ten years in the land of Canaan, and gave her to Abram her husband to be his wife." — Genesis 16:3 (ASV)

Abram had dwelt ten years in the land of Canaan. —He was now, therefore, eighty-five years of age (see Genesis 16:16 and Genesis 12:4), and this long delay had not only tried his faith, but brought him and Sarai to the conclusion that the promised seed was to be obtained by other means.