Delight in & Feed upon the Word of God.

Great words by J.C. Ryle:

“Read [the Scriptures] reverently, as the Word of God, not of man, believing implicitly that what it approves is right, and what it condemns is wrong. Be very sure that every doctrine which will not stand the test of Scripture is false. This will keep you from being tossed to and fro, and carried about by the dangerous opinions of these latter days.

And read it regularly. This is the only way to become "mighty in the Scriptures." A quick glance at the Bible now and then does little good. At that rate you will never become familiar with its treasures, or feel the sword of the Spirit fitted to your hand in the hour of conflict. But store up your mind with Scripture, by diligent reading, and you will soon discover its value and power. Texts will rise up in your hearts in the moment of temptation. Commands will suggest themselves in times of doubt. Promises will come across your thoughts in the time of discouragement. And thus you will experience the truth of David's words, "I have hidden your word in my heart that I might not sin against you" (Psalm 119:11); and of Solomon's words, "When you walk, they will guide you; when you sleep, they will watch over you; when you awake, they will speak to you" (Proverbs 6:22).”