Even so, affectionately longing for you, we were well pleased to impart to you, not the Gospel of God only, but also our own souls, because you had become very dear to us.
But also our own souls - Or rather “lives” -  ψυχὰς psuchas; Matthew 6:25; Matthew 20:28; Luke 12:22, Luke 12:13; Mark 3:4. This does not mean that the apostle was willing to be damned, or to lose his soul in order to save them, but that if it had been necessary he would have been ready to lay down his life; see 1 John 3:16. “We ought to lay down our lives for the brethren;” compare notes, John 15:13. His object seems to be to assure them that he did not leave them from any want of love to them, or from the fear of being put to death. It was done from the strong conviction of duty. He appears to have left them because he could not longer remain without exposing others to danger, and without the certainty that there would be continued disturbances; see Acts 17:9-10.