John's eighth sign, the catch of 153 large fish in John 21, corresponds to the first sign at Cana, and the first sign's lessons explain it. At the wedding, the people had water for man-devised purification rites but lacked wine, which represents the covenantal relationship with God. Jesus' abundant wine pointed to the New Covenant in His blood, which, unlike the Old Covenant blood merely sprinkled on the outside, flows into a person, bringing forgiveness, a personal relationship with the Father and the Son, and the law written on the heart. It also anticipates God's future regathering of Israel and Judah, freeing them from Judaism's traditions and Babylonish Christianity's customs so that they rejoice as with wine (Zechariah 10). In the eighth sign, the disciples have no food. Jesus' food was to do the will of the One who sent Him and finish His work (John 4:34), but the disciples had gone back to fishing to provide for themselves, though God had supplied all their needs for three-and-a-half years while they did His work. Mary's words, "They have no wine," describe the nation's condition; Christ's question about food concerns the disciples' spiritual condition. His miracle points them back to the work they were to do. In both signs Jesus performs the miracle, yet His servants have work to do: filling the waterpots, casting the net. In both He supplies the need, wine in the first, bread and fish in the eighth. The 153 fish did not feed the disciples, since Jesus already had bread and fish on the coals; they served a different purpose.

The catch of exactly 153 large fish, hauled in without breaking the nets (John 21:11), is the eighth and last of the eight signs that give John's gospel its structure. Since God's Word is like silver purified seven times (Psalm 12:6), nothing in it is superfluous, and John remembered this precise number for decades because it carries meaning. These signs were more than displays of divine power. They were specific acts pointing to Jesus as Israel's Messiah, aimed at a physical nation that was spiritually blind and in dire need of the promised Seed. John arranged the signs in a chiasm, in which the first corresponds to the last, the second to the second to last, and so on. E. W. Bullinger appears to have been the first to notice this in Appendix 176 of The Companion Bible. The eighth sign therefore corresponds to the first sign, turning water into wine at Cana, and in many ways answers it. That first sign begins with a condition of lack: the wedding had no wine, and the nation had only man-made purification rituals, symbolized by six stone waterpots, in place of what it truly needed. The miraculous catch answers that lack, and its meaning is unlocked by tying it to the Cana sign.