Who was faithful to him - In Numbers 12:7, God gives this testimony to Moses: My servant Moses - is faithful in all my house; and to this testimony the apostle alludes. House not only means the place where a family dwells, but also the family itself. The whole congregation of Israel was the house or family of God, and God is represented as dwelling among them; and Moses was his steward, and was faithful in the discharge of his office; strictly enforcing the Divine rights; zealously maintaining God's honor; carefully delivering the mind and will of God to the people; proclaiming his promises, and denouncing his judgments, with the most inflexible integrity, though often at the risk of his life. Jesus Christ has his house - the whole great family of mankind, for all of whom he offered his sacrificial blood to God; and the Christian Church, which is especially his own household, is composed of his own children and servants, among and in whom he lives and constantly resides. He has been faithful to the trust reposed in him as the apostle of God; he has faithfully proclaimed the will of the Most High; vindicated the Divine honor against the corrupters of God's worship; testified against them at the continual hazard of his life; and, at last, not only died as a victim to cancel sin, but also as a martyr to his faithfulness. Christ's faithfulness, says Leigh, consists in this: "That he has as fully revealed unto us the doctrine of the Gospel, as Moses did that of the law; and that he hath faithfully performed and fulfilled all the types of himself and all the things signified by Moses' ceremonies, as Moses hath faithfully and distinctly set them down."
But there is a sense given to the word נאמן neeman, Numbers 12:7, which we translate faithful, by several of the Jewish writers, which is well worthy of note: it signifies, say they, "one to whom secrets are confided, with the utmost confidence of their being safely and conscientiously kept." The secret of God was with Moses, but all the treasures of wisdom and knowledge were in Christ. Life and immortality were comparatively secrets till Christ revealed and illustrated them, and even the Divine nature was but little known, and especially the Divine philanthropy, till Jesus Christ came; and it was Jesus alone who declared that God whom no man had ever seen. Moses received the secrets of God, and faithfully taught them to the people; Jesus revealed the whole will of God to mankind. Moses was thus faithful to a small part of mankind, viz. the Jewish people; but in this sense Jesus was faithful to all mankind: for he was the light to enlighten the Gentiles, and the glory of his people Israel.
Who was faithful - see the note, Hebrews 2:17. He performed with fidelity all the functions entrusted to him.
To him that appointed him - Margin, “made.” The word “made,” however, is used in the sense of constituted, or appointed. The meaning is, that he was faithful to God. Perhaps Paul urges on them the necessity of considering “his fidelity” in order to keep “them” from the danger of apostasy. A leading object of this Epistle was to preserve those whom he had addressed from apostatizing from God amidst the temptations and trials to which they were exposed. In doing this, what could be a more powerful argument than to direct their attention to the unwavering constancy and fidelity of the Lord Jesus? The “importance” of such a virtue in the Saviour is manifest. It is seen everywhere; and all the great interests of the world depend on it. A husband should maintain inviolate fidelity toward a wife, and a wife toward her husband; a child should be faithful to a parent, a clerk and apprentice to his employer, a lawyer to his client, a physician to his patient, an ambassador to the government that commissions him.
No matter what may be the temptations in the way, in all these, and in all other relations, there should be inviolate fidelity. The welfare of the world depended on the faithfulness of the Lord Jesus. Had he failed in that, all would have been lost. His fidelity was worthy of the more attentive consideration from the numerous temptations which beset his path, and the attempts which were made to turn him aside from his devotedness to God. Amidst all the temptations of the adversary, and all the trials through which he passed, he never for a moment swerved from fidelity to the great trust which had been committed to his hands. What better example to preserve them from the temptations to apostasy could the apostle propose to the Christians whom he addressed? What, in these temptations and trials, could be more appropriate than for them to consider the example of the great apostle and high priest of their profession? What more proper for us now in the trials and temptations of our lives, than to keep that great and glorious example continually before our eyes?
As also Moses was faithful - Fidelity to God was remarkable in Moses. In all the provocations and rebellions of the Jews, he was firm and unwavering. This is affirmed of him in Numbers 12:7, to which place the apostle here alludes, “My servant, Moses, is not so, who is faithful in all his house.” The word “house,” as applied to Moses, is used probably in the sense of “family,” as it often is, and refers to the “family” over which he presided - that is, the Jewish nation. The whole Jewish people were a “household,” or the family of God, and Moses was appointed to preside over it, and was faithful in the functions of his office there.