Thy word is true from the beginning: Every word of God that has ever been expired from God and inspired through man is true. Here is implied strongly the verbal inspiration of the Bible, for every word from the beginning of the world (words spoken to Adam and recorded) all the way to the completion of the word of God in the book of Revelation is true.
The verbal inspiration of the Bible has been a long-discussed and debated issue, but most of us as Baptists still believe in this positive and perfect inspiration of every word of God.
and every one of thy righteous judgments endureth for ever. Not only are these words true from the beginning, but these words will also continue to be true throughout the existence of this present world and the world to come. The word endureth is a supplied word, so we could just as well put the word is in it place. In other words, every one of God's judgments (His word), exists forever, not simply for the duration of time. These words are, then, eternal words.
Matthew 24:35 Heaven and earth shall pass away, but my words shall not pass away. (Mark 13:31; Luke 21:33).