Romans 12:1, 6

Beloved friends, what should be our proper response to God’s marvelous mercies? To surrender yourselves to God to be his sacred, living sacrifices. And live in holiness, experiencing all that delights his heart. For this becomes your genuine expression of worship.

God’s marvelous grace imparts to each one of us varying gifts. So if God has given you the grace-gift of prophecy, activate your gift by using the proportion of faith you have to prophesy.