Genesis 16:2-4

2 and so she said to Abram, "The Lord has kept me from having children. Why don't you sleep with my slave? Perhaps she can have a child for me." Abram agreed with what Sarai said.
3 So she gave Hagar to him to be his concubine. (This happened after Abram had lived in Canaan for ten years.)
4 Abram had intercourse with Hagar, and she became pregnant. When she found out that she was pregnant, she became proud and despised Sarai.

Genesis 16:2-4 Meaning and Commentary

INTRODUCTION TO GENESIS 16

This chapter gives an account of Abram's marrying his maid, at the instance of his wife Sarai, Ge 16:1-3, who, upon conceiving, despised her mistress; of which complaint is made to Abram, who leaving his maid to his wife, to deal with her as she pleased, dealt harshly by her, and therefore fled from her, Ge 16:4-6; when she was met by an angel, who advised her to return and submit herself to her mistress, and told her her seed would be greatly multiplied, gave a name to the child she went with, and described his temper and disposition, Ge 16:7-12; and then we have the name of God that spoke to her, and of the place where the discourse passed between them, Ge 16:13,14; and the chapter is concluded with the birth of Ishmael, and the age of Abram at his birth, Ge 16:15,16.

Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.