2CO 2:3

3 So, [instead of going to visit you at that time], I wrote a letter [and sent it to you]. I wrote it the way I did so that [you would know what you should do. Then] when I come to visit you, you will not make me unhappy when you should be causing me to rejoice. I was quite sure that all of you [would do what I told you to do in that letter, and because of that] I would be happy and you would be happy, too.