He is seated on the throne and all authority in heaven and on earth has been given to Him. By that authority, He gives grace. That’s why Paul says “by whom we have received grace and apostleship.”
"By whom we have received grace and apostleship, for obedience to the faith among all nations, for his name." Rom 1:5-12
Grace comes from the throne; from His authority.
We receive grace from the Seed of David who was designated the Son of God with power according to the resurrection from the dead. Grace has the backing of the entrhoned, Heavenly Christ. For every believer, the grace that we enjoy is backed by the authority of the Son of God! It’s a gift, and it’s free. It’s freely and abundantly available, and there’s nothing to keep you from it, because He who has the authority to give it to you purged your sins by Himself and sat down at the right hand of God
"God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets." Heb 1:1
Read the book Here ???? Romans I-VIII – Righteousness in Heaven. Live on Earth.