And Jacob asked him, and said, Tell me, I pray thee, thy name. And he said, Wherefore is it that thou dost ask after my name? And he blessed him there.

Wesley's Notes

32:29 Wherefore dost thou ask after my name? - What good will it do thee to know that? The discovery of that was reserved for his death - bed, upon which he was taught to call him Shiloh. But instead of telling him his name, he gave him his blessing, which was the thing he wrestled for; he blessed him there, repeated and ratified the blessing formerly given him. See how wonderfully God condescends to countenance and crown importunate prayer? Those that resolve though God slay them, yet to trust in him, will at length be more than conquerors.

Jamieson-Fausset-Brown Bible Commentary

29. Jacob asked, Tell me . thy name-The request was denied that he might not be too elated with his conquest nor suppose that he had obtained such advantage over the angel as to make him do what he pleased.

Matthew Henry's Concise Commentary

32:24-32 A great while before day, Jacob being alone, more fully spread his fears before God in prayer. While thus employed, One in the likeness of a man wrestled with him. When the spirit helpeth our infirmities, and our earnest and vast desires can scarcely find words to utter them, and we still mean more than we can express, then prayer is indeed wrestling with God. However tried or discouraged, we shall prevail; and prevailing with Him in prayer, we shall prevail against all enemies that strive with us. Nothing requires more vigour and unceasing exertion than wrestling. It is an emblem of the true spirit of faith and prayer. Jacob kept his ground; though the struggle continued long, this did not shake his faith, nor silence his prayer. He will have a blessing, and had rather have all his bone put out of joint than go away without one. Those who would have the blessing of Christ, must resolve to take no denial. The fervent prayer is the effectual prayer. The Angel puts a lasting mark of honour upon him, by changing his name. Jacob signifies a supplanter. From henceforth he shall be celebrated, not for craft and artful management, but for true valour. Thou shalt be called Israel, a prince with God, a name greater than those of the great men of the earth. He is a prince indeed that is a prince with God; those are truly honourable that are mighty in prayer. Having power with God, he shall have power with men too; he shall prevail, and gain Esau's favour. Jacob gives a new name to the place. He calls it Peniel, the face of God, because there he had seen the appearance of God, and obtained the favour of God. It becomes those whom God honours, to admire his grace towards them. The Angel who wrestled with Jacob was the second Person in the sacred Trinity, who was afterwards God manifest in the flesh, and who, dwelling in human nature, is called Immanuel, Ho 12:4,5. Jacob halted on his thigh. It might serve to keep him from being lifted up with the abundance of the revelations. The sun rose on Jacob: it is sun-rise with that soul, which has had communion with God.