Romans 15:15
Nevertheless, brethren, I have written the more boldly unto you in some sort, as putting you in mind, because of the grace that is given to me of God, Nevertheless, brethren, I have written the more boldly unto you in some sort, as putting you in mind, because of the grace that is given to me of God,
Paul writes to fellow believers with greater boldness in places as a way of putting them in mind, and he does so because of the grace given to him by God which appointed him to his ministry. He writes in this bold reminding way while persuaded that they are full of goodness and able to admonish one another. That grace-given ministry is the proclaiming of the gospel to the Gentiles, so that they may become an acceptable offering, sanctified by the Holy Spirit. The Spirit's sanctifying work continues after baptism, for those raised from the water are to live a new life dead to sin and alive to God, with words and character made holy by the Spirit's power.
A person is fitted for this bold reminding service for others only when mental power and the talent of speech are sanctified. The duty to put others in mind belongs to the hearers as well as to Paul. That shared duty requires guarding the door of the lips, refusing to speak rashly, refusing to listen to or join criticism and faultfinding, and speaking kindly, tenderly, and encouragingly instead. Joined to this bold reminding is the prayer that the God of hope fill believers with all joy and peace in believing, so that they may abound in hope through the power of the Holy Spirit.