2 Corinthians 1:15-18

15And in this confidence I was minded to come first unto you, that ye might have a second benefit; 16and by you to pass into Macedonia, and again from Macedonia to come unto you, and of you to be set forward on my journey unto Judæa. 17When I therefore was thus minded, did I show fickleness? or the things that I purpose, do I purpose according to the flesh, that with me there should be the yea yea and the nay nay? 18But as God is faithful, our word toward you is not yea and nay.