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Faithfulness is a quality or attribute applied in the Scripture to both God and man. This article is limited to the consideration of the Scripture teaching concerning the meaning of faithfulness in its application to God.
Faithfulness is one of the characteristics of God’s ethical nature. It denotes the firmness or constancy of God in His relations with men, especially with His people. It is, accordingly, one aspect of God’s Truth and of His Unchangeableness. God is true not only because He is really God in contrast to all that is not God, and because He realizes the idea of Godhead, but also because He is constant or faithful in keeping His promises, and therefore is worthy of trust (see nodetitle). God, likewise, is unchangeable in His ethical nature. This unchangeableness the Scripture often connects with God’s goodness and mercy, and also with His constancy in reference to His covenant promises, and this is what the Old Testament means by the Faithfulness of God.
Faithfulness of God in the Old Testament
That which concerns us, however, in regard to this close relation between righteousness and faithfulness is to observe that this should not be pressed to the extent of the identification of righteousness with covenant faithfulness in these passages in the Psalms and the second half of Isa. The idea seems to be that Israel has sinned and has no claim upon Yahweh, finding her only hope of deliverance in His mercy and faithfulness. But this very fact that Yahweh is merciful and faithful becomes, as it were, Israel’s claim, or rather the ground of Israel’s hope of deliverance from her enemies. Hence, in the recognition of this claim of His people, God is said to be righteous in manifesting His mercy and faithfulness, so that His righteousness, no less than His mercy and faithfulness, becomes the ground of His people’s hope. Righteousness is thus closely related in these cases to faithfulness, but it is not identified with it, nor has it in all cases lost entirely its forensic tone. This seems to be, in general, the meaning of righteousness in the Psalms and the second half of Isaiah, with which may also be compared
The emphasis which this attribute of God has in the Old Testament is determined by the fact that throughout the whole of the Old Testament the covenant relation of Yahweh to His people is founded solely in God’s grace, and not on any merit of theirs. If this covenant relation had been based on any claim of Israel, faithfulness on God’s part might have been taken for granted. But since Yahweh’s covenant relation with Israel and His promises of salvation spring solely from, and depend wholly upon, the grace of God, that which gave firm assurance that the past experience of God’s grace would continue in the future was this immutable faithfulness of Yahweh. By it the experience of the fathers was given a religious value for Israel from generation to generation. And even as the faithfulness of God bridged over the past and the present, so also it constituted the connecting link between the present and the future, becoming thus the firm basis of Israel’s hope; compare
Faithfulness of God in the New Testament
In the New Testament teaching concerning the faithfulness of God the same idea of faithfulness to His gracious promises is emphasized and held up as the object of a confident trust in God. This idea is usually expressed by the adjective pistos, and once by the noun pistis, which more frequently has the active sense of faith or trust.
An attempt has been made by Wendt (SK, 1883, 511 f;, English translation, I, 259 f) to interpret the words aletheia and alethes in many instances, especially in the Johannine writings, as denoting faithfulness and rectitude, after the analogy of the Septuagint rendering eleos kai aletheia for the Hebrew phrase "mercy and truth," in which truth is equivalent to faithfulness. But the most that could be inferred from the fact that the Septuagint uses the word aletheia to translate the Hebrew word ’emeth, and in about one-half the cases where ’emunah occurs, would be that those Greek words might have been prepared for such a use in the New Testament. But while it is true that there is one usage of these words in John’s writings in an ethical sense apparently based on the Old Testament use of ’emeth and ’emunah, the Greek words do not have this meaning when employed to denote a characteristic of God. Neither is the adjective alethinos so used.
In the Epistles of Paul the word aletheia occurs quite frequently to denote the truth revealed by God to man through reason and conscience, and to denote the doctrinal content of the gospel. In two passages, however, the words alethes and aletheia seem to signify the faithfulness of God (
This faithfulness of God in the sense of fidelity to His promises is set forth as the object of sure trust and hope by the writer of the
John also ascribes this attribute to God. Since one of the most precious of God’s promises through Christ is the pardon of sin through the "blood of Jesus Christ," John says that God’s faithfulness, as well as His righteousness, is manifested in the forgiveness of sin (1
The faithfulness of God is viewed from a slightly different point by Peter when he tells his readers that those who suffer as Christians and in accordance with God’s will should "commit their soul’s in well-doing unto a faithful Creator" (
This attribute is also ascribed to Christ in the New Testament. Where Jesus is called a faithful high priest, the idea expressed is His fidelity to His obligations to God and to His saving work (
In summing up the Scripture teaching concerning God’s faithfulness, three things are noteworthy. In the first place, this characteristic of God is usually connected with His gracious promises of salvation, and is one of those attributes which make God the firm and secure object of religious trust. As is the case with all the Scripture teaching concerning God, it is the religious value of His faithfulness which is made prominent. In the second place, the so-called moral attributes, of which this is one, are essential in order to constitute God the object of religion, along with the so-called incommunicable attributes such as Omnipotence, Omnipresence and Unchangeableness. Take away either class of attributes from God, and He ceases to be God, the object of religious veneration and trust. And in the third place, while these moral attributes, to which faithfulness belongs, have been called "communicable," to distinguish them from the "incommunicable" attributes which distinguish God from all that is finite, it should never be forgotten that, according to the Scripture, God is faithful in such an absolute sense as to contrast Him with men who are faithful only in a relative sense, and who appear as changeable and faithless in comparison with the faithfulness of God.
On the relation of God’s truth and faithfulness, see:
On the relation of the faithfulness to the righteousness of God, see: