Johannes 2:22

believed the scripture--on this subject; that is, what was meant, which was hid from them till then. Mark (1) The act by which Christ signalized His first public appearance in the Temple. Taking "His fan in His hand, He purges His floor," not thoroughly indeed, but enough to foreshadow His last act towards that faithless people--to sweep them out of God's house. (2) The sign of His authority to do this is the announcement, at this first outset of His ministry, of that coming death by their hands, and resurrection by His own, which were to pave the way for their judicial ejection.

In the close of the foregoing chapter we had an account of the first disciples whom Jesus called, Andrew and Peter, Philip and Nathanael. These were the first-fruits to God and to the Lamb, Rev 14:4. Now, in this chapter, we have, I. The account of the first miracle which Jesus wrought - turning water into wine, at Cana of Galilee (Joh 2:1-11), and his appearing at Capernaum (Joh 2:12). II. The account of the first passover he kept at Jerusalem after he began his public ministry; his driving the buyers and sellers out of the temple (Joh 2:13-17); and the sign he gave to those who quarrelled with him for it (Joh 2:18-22), with an account of some almost believers, that followed him, thereupon, for some time (Joh 2:23-25), but he knew them too well to put any confidence in them.

2:22 they believed: Witnessing a miracle from God can inspire belief, but it is not the deepest faith possible (20:29).