Now certainly, you have heard of the dispensation of the grace of God, which has been given to me among you
Other versions
King James Version
If ye have heard of the dispensation of the grace of God which is given me to you-ward:English Standard Version
assuming that you have heard of the stewardship of God's grace that was given to me for you,New International Version
Surely you have heard about the administration of God's grace that was given to me for you,