Therefore, the servant placed his hand under the thigh of Abraham, his lord, and he swore to him on his word
Other versions
King James Version
And the servant put his hand under the thigh of Abraham his master, and sware to him concerning that matter.English Standard Version
So the servant put his hand under the thigh of Abraham his master and swore to him concerning this matter.New International Version
So the servant put his hand under the thigh of his master Abraham and swore an oath to him concerning this matter.