Now by this

John 2:11
Jesus performed this, the first of His signs, at Cana in Galilee. He thus revealed His glory, and His disciples believed in Him.

John 3:2
He came to Jesus at night and said, "Rabbi, we know that You are a teacher who has come from God. For no one could perform the signs You are doing if God were not with him."

John 4:42-48
They said to the woman, "We now believe not only because of your words; we have heard for ourselves, and we know that this man truly is the Savior of the world." . . .

John 11:15, 42
and for your sake I am glad I was not there, so that you may believe. But let us go to him." . . .

John 15:24
If I had not done among them the works that no one else did, they would not be guilty of sin; but now they have seen and hated both Me and My Father.

John 16:30
Now we understand that You know all things and that You have no need for anyone to question You. Because of this, we believe that You came from God."

the word

Ecclesiastes 12:10
The Teacher searched to find delightful sayings and to record accurate words of truth.

1 Thessalonians 2:13
And we continually thank God that in receiving the word of God from us, you did not accept it as the word of men, but as the true word of God--the word now at work in you who believe.

1 John 2:21
I have not written you because you lack knowledge of the truth, but because you have it, and because no lie comes from the truth.