New Revised Standard Version
Jesus answered, “Do you believe because I told you that I saw you under the fig tree? You will see greater things than these.”

Contemporary English Version
Jesus answered, "Did you believe me just because I said that I saw you under the fig tree? You will see something even greater.

New American Bible
Jesus answered and said to him, “Do you believe because I told you that I saw you under the fig tree? You will see greater things than this.”

Douay-Rheims Bible
Jesus answered and said to him: Because I said unto thee, I saw thee under the fig tree, thou believest: greater things than these shalt thou see.

Jesus answered and said to him: Because I said unto thee, I saw thee under the fig tree, thou believest: greater things than these shalt thou see.

Because.

John 20:29 Jesus saith to him: Because thou hast seen me, Thomas, thou hast believed: blessed are they that have not seen and have believed.

Luke 1:45 And blessed art thou that hast believed, because those things shall be accomplished that were spoken to thee by the Lord.

Luke 7:9 Which Jesus hearing, marvelled: and turning about to the multitude that followed him, he said: Amen I say to you, I have not found so great faith, not even in Israel.

thou shalt.

John 11:40 Jesus saith to her: Did not I say to thee that if thou believe, thou shalt see the glory of God?

Matthew 13:12 For he that hath, to him shall be given, and he shall abound: but he that hath not, from him shall be taken away that also which he hath.

Matthew 25:29 For to every one that hath shall be given, and he shall abound: but from him that hath not, that also which he seemeth to have shall be taken away.