2. The assurances which he gives to the Messiah of his presence with him in all he did pursuant to his undertaking speak much encouragement to him, v. 6. (1.) God owns that the Messiah did not take the honour of being Mediator to himself, but was called of God, that he was no intruder, no usurper, but was fairly brought to it (Heb. v. 4): I have called thee in righteousness. God not only did him no wrong in calling him to this hard service, he having voluntarily offered himself to it, but did himself right in providing for his own honour and performing the word which he had spoken. (2.) He promises to stand by him and strengthen him in it, to hold his hand, not only to his work, but in it, to hold his hand, that it might not shake, that it might not fail, and so to keep him. When an angel was sent from heaven to strengthen him in his agonies, and the Father himself was with him, then this promise was fulfilled. Note, Those whom God calls he will own and help, and will hold their hands.