Jesus authority to do miracles came from the Father, who SENT him. We are also 'apostolic' because we are SENT, as as ambassadors of heaven, to fulfil our task with kingly authority. It is important we discover for ourselves what God has called us to do, and passionately pursue the mission that God has wired into our heart. It requires we take ownership of it; see people as God sees them, and execute on earth the judgements of heaven.