We have a lesson in prayer here. Daniel models for us how to pray and what to pray.
Daniel survived the den of lions because he first built up his confidence in God's word in another den: Daniel's daily place of prayer
As Ephesians comes to a close, Paul brings us as Christians to the realization that in all of these things that he's spoken about we are in a spiritual battle.
Paul's command to be filled with the Spirit means to continually abide and to walk under the influence of the Spirit's power and authority.
To preserve the quality of our conversation, we're to fill our talk with thanksgiving. This raises the bar and keeps us from immoral conversation.