Filipenses 1

Filipenses 1:23

In expressing such a desire he knew that when he returns to Christ he will know more plainly the causes of all that is happening on earth. He will then know more of what constitutes his own humanity, his soul, his mind, his spirit. He will then know more of what the Spirit is enabling and what grace it is that is being given to those who are faithful in the Holy Spirit. — ON FIRST PRINCIPLES 2.11.5