Speaking, Serving, Praising1
whoever speaks, as one who speaks oracles of God; whoever serves, as one who serves by the strength that God supplies—in order that in everything God may be glorified through Jesus Christ. To him belong glory and dominion forever and ever. Amen. (1 Peter 4:11 ESV)
Whoever speaks from a God-given gift to teach and preach the Word of God needs to do so as a mouthpiece of God. Humble, yielded, dependent, and confident that God will use His Word in people's lives. It isn't a matter of us thinking that we are the authority but they firmly believing that God is the authority and we are speaking to others on His behalf.
When we serve others we are to do so in God's strength. We do not serve from our own reservoir of strength but by God's unlimited supply of grace. God supply strength. I like to think of it kind of like fuel injection on a car. Just as a fuel injection system sends the right amount of fuel at exactly the right time, God gives His people just the right amount of exactly what is needed at just the right moment. I know it's kind of a silly example, but it works for me.
Peter condenses the spiritual gifts the Holy Spirit gives into two primary categories: speaking gifts and serving gifts. As we serve and speak, it is all for the glory of God in Christ. That the finished work of Christ on the cross in dying for us and shedding His blood would be the preeminent thought of our hearts to such a degree that praise to God would overflow from our hearts and lips.