Our spiritual life differs from every other kind of life. It does not come to us directly from God, but it is first deposited in all its fullness in Christ our mediator (Col. 1:19). So it is out of his fullness that we receive this life (John 1:16). So Christ is our life (Col 3:4). It is, therefore, not so much we who live but Christ who lives in us (Gal 2:20). We can do nothing of ourselves but only by Christ’s power and virtue (1 Cor 15:10). The origin of this life is in God. The fullness of this life is in Christ. And it is imparted to us by the Holy Spirit. We experience it as a new power and ruling principle in us (Rom8:11; Eph 4:15, 16). Christ is our life and without him we can do nothing (John 15:5).
John Owen (The Effectual Operation of the Blessed Spirit in the Regeneration or Conversion of Sinners)