The beginning of thy word is truth. The design of the Prophet it is not difficult to perceive; but the words admit of being understood in two ways. Some interpret the noun beginning as denoting that the truth of God shines forth conspicuously in his word, immediately when we enter for the first time upon the study of it, so that this entrance may justly be called the beginning of the word. This sentence contains the profitable doctrine, that if we are finished with eyes of understanding, we will no sooner cast our eyes upon heavenly doctrine than the truth of it will meet our view. Others, however, give a different explanation, and perhaps with no less propriety, eliciting this sense, That the word of God has been from the beginning certain and infallible truth, and will continue so even to the end. These two clauses hang very well together -- that God has been true to his word from the beginning, and that he will continue to be so everlastingly and immutably. The interpretation which refers the word judgment to the works of God and not to his doctrine, I would not altogether condemn, yet it is not in harmony with the context. Let us then retain this sense, That from the time when God began to speak he has always been faithful to his promises, and has never disappointed the hope of his people; and that the course of this faithfulness has been so uniform, that from the beginning even to the end his word is true and faithful.

Thy word is true from the beginning - literally, "The head of thy word is truth." Probably the meaning is, that the "principles" of God's word were truth, or were based on truth. The main thing - that on which all relied - was truth, absolute truth. It was not "made" truth by the mere will of God, but it was "founded on" essential truth. Compare Psalm 119:142, note; Psalm 119:144, note. Margin, "The beginning of thy word is true." Its origin is truth; its foundation is truth; its essential nature is truth. See Psalm 19:9.
And every one of thy righteous judgments endureth for ever - Since any one of thy laws is as certainly founded in truth as any other, it must be that all alike are eternal and unchanging. It must be so with all the essential principles of morality. Mere regulations in regard to rites and ceremonies may be altered, as local and municipal laws among men may be; but essential principles of justice cannot be. A civil corporation - the government of a city or borough - may change its regulations about streets, and culverts, and taxes; but they can never enact laws authorizing murder or theft; nor can they alter the essential nature of honesty and dishonesty; of truth and falsehood.

Thy word is true from the beginning - ראש rosh, the head or beginning of thy word, is true. Does he refer to the first word in the Book of Genesis, בראשית bereshith, "in the beginning?" The learned reader knows that ראש rash, or raash, is the root in that word. Every word thou hast spoken from the first in Bereshith (Genesis) to the end of the law and prophets, and all thou wilt yet speak, as flowing from the fountain of truth, must be true; and all shall have in due time, their fulfllment. And all these, thy words endure for ever. They are true, and ever will be true.

Thy word [is] true [from] the (e) beginning: and every one of thy righteous judgments [endureth] for ever.
(e) Since you first promised it, even to the end all your sayings are true.

Thy word is true from the beginning,.... Every word of promise God made from the beginning of the world, and in any period of time; as to Adam, to Abraham, to the Israelites, or to any other person or persons; was true in itself, and faithfully performed, not one ever failed; particularly the promise concerning the Messiah, made to Adam in Eden; and which has been spoken of by all the prophets which have been since the world began, Genesis 3:15. Or it maybe rendered, as the Targum,
"the beginning of thy word is truth (h):''
which a man finds to be so as soon as ever he enters upon the reading of it. Some refer this to the first chapter of Genesis; others to the first part of the decalogue, concerning the unity of God and his worship; so Aben Ezra, and R. Jeshua, as cited by him, and Jarchi; the same is mentioned by Kimchi as one of the senses, though the first he gives is agreeable to our version: but there is no need to restrain the sense to those particulars, or to the first part of the Scriptures, since the whole is truth; and the meaning may be, "the sum of thy word is truth" (i): so the word here used is sometimes taken for the sum of anything, Numbers 26:2; all that is contained in the word of God is truth; its promises, precepts and doctrines, histories, prophecies and proverbs, all the sayings of it are faithful and true;
and everyone of thy righteous judgments endureth for ever; every precept of the word, and doctrine of it; see Psalm 119:152.
(h) "principium verbi tui veritas", Pagninus, Musculus; "vel verborum tuorum", V. L. (i) "Summa verbi tui est veritas", Cocceius, Schmidt.

God has been ever faithful, and the principles of His government will ever continue worthy of confidence.
from the beginning--that is, "every word from Genesis (called so by the Jews from its first words, 'In the beginning') to the end of the Scriptures is true." HENGSTENBERG translates more literally, "The sum of thy words is truth." The sense is substantially the same. The whole body of revelation is truth. "Thy Word is nothing but truth" [LUTHER].

The beginning - From the beginning of the world.