The Old and New Testaments both affirm that the words recorded in the Bible are God’s words and that they are true. Since God cannot lie, His Word is truth: “As for God, his way is perfect: The Lord’s word is flawless” (Psalm 18:30). Since God is eternal and unchanging, His Word is always the same: “Heaven and earth will pass away, but my words will never pass away” (Matthew 24:35; cf. Isaiah 40:8). Jesus uses the Word as He rebukes the devil who was tempting Him: “It is written: ‘Man shall not live on bread alone, but on every word that comes from the mouth of God’” (Matthew 4:4; cf. Deuteronomy 8:3).