Indeed, the Word is truth we can rely on to light our path through life; it is our sometimes imperfect understanding that creates inconsistencies in our own mind—difficulties in understanding what can be set right with the guidance of the Holy Spirit. I think sometimes we forget to ask for that guidance and try to puzzle things out for ourselves—never a good study method.
2 Timothy 3:16-17 (NKJV): All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.
Psalm 119:160 (NKJV): The entirety of Your word is truth,
And every one of Your righteous judgments endures forever.
Proverbs 30:5 (NKJV): Every word of God is pure;
He is a shield to those who put their trust in Him.
1 Corinthians 2:14 (NKJV): But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; nor can he know them, because they are spiritually discerned.