Oaths: Often Accompanied by Placing the Hand Under the Thigh of The
Source: TTT
Genesis 24:2, 9
So Abraham instructed the chief servant of his household, who managed all he owned, “Place your hand under my thigh, / So the servant placed his hand under the thigh of his master Abraham and swore an oath to him concerning this matter.
Genesis 47:29
When the time drew near for Israel to die, he called his son Joseph and said to him, “If I have found favor in your eyes, put your hand under my thigh and promise to show me kindness and faithfulness. Do not bury me in Egypt,