This was the beginning of Jesus’ [miraculous] signs, which He performed in Cana in Galilee. [In doing this] He demonstrated His glorious power and His disciples believed in Him.
For whatever things were written previously [i.e., in the Old Testament], were intended for us to learn from, so that we could have hope [i.e., in the face of difficult times] through remaining steadfast, and through the encouragement [received] from reading the Scriptures.
Now these events happened to those people as examples [to us], and they were written as warnings to us, to whom the fulfillment of the ages has come. [Note: This refers to past ages concluding with the coming of Christ in that day].
I have written these things to you people, who believe in the name [i.e., in the person and work] of the Son of God, so that you can have assurance that you have [the hope of] never ending life. [See Titus 1:2; 3:7; Mark 10:30].