From the Gospel According to John:

I say these things so that you may be saved. (John 5:34)

These things I have spoken to you, that my joy may be in you, and that your joy may be full. (John 15:11)

These things I command you, so that you will love one another. (John 15:17)

I have said all these things to you to keep you from falling away. (John 16:1)

I have said these things to you, that in me you may have peace. (John 16:33)

But now I am coming to you, and these things I speak in the world, that they may have my joy fulfilled in themselves. (John 17:13)