There is more in this sequence than we have room in which to dwell. Focus on the issue of not going to battle with untested gear. That happens more than we would care to admit. Ephesians 6:10 - 20 reminds us that we are to take up the full armor of God, daily. It is not just when we think we need to deal with difficult issues, giants. Like David with his sling, we are to be intimately familiar with the armor because of consistent, daily use. All of it is important, but the offensive weapon, the one with which we attack the enemy is the Word of God. We cannot expect to deal well with the challenges we face in life if we are not intimately engaged in and with the Word daily. Not just reading or hearing good messages. Wrestling with the text. Struggling with the difficult passages. Learning to wield it effectively in conversation with both believers and non believers.
I have seen far too many well meaning believers launch into the fray, not knowing how to wield the Sword of the Spirit. The results are not good. Do not be one of them. Engage.