New Revised Standard Version
Nathanael asked him, “Where did you get to know me?” Jesus answered, “I saw you under the fig tree before Philip called you.”

Contemporary English Version
"How do you know me?" Nathanael asked. Jesus answered, "Before Philip called you, I saw you under the fig tree."

New American Bible
Nathanael said to him, “How do you know me?” Jesus answered and said to him, “Before Philip called you, I saw you under the fig tree.”

Douay-Rheims Bible
Nathanael saith to him: Whence knowest thou me? Jesus answered and said to him: Before that Philip called thee, when thou wast under the fig tree, I saw thee.

Nathanael saith to him: Whence knowest thou me? Jesus answered and said to him: Before that Philip called thee, when thou wast under the fig tree, I saw thee.

when.

John 2:25 And because he needed not that any should give testimony of man: for he knew what was in man.

Genesis 32:24-30 He remained alone; and behold, a man wrestled with him till morning. . . .

Psalm 139:1,2 Unto the end, a psalm of David. Lord, thou hast proved me, and known me: . . .

Isaiah 65:24 And it shall come to pass, that before they call, I will hear; as they are yet speaking, I will hear.

Matthew 6:6 But thou when thou shalt pray, enter into thy chamber, and having shut the door, pray to thy Father in secret, and thy father who seeth in secret will repay thee.

1 Corinthians 4:5 Therefore, judge not before the time: until the Lord come, who both will bring to light the hidden things of darkness and will make manifest the counsels of the hearts. And then shall every man have praise from God.

1 Corinthians 14:25 The secrets of his heart are made manifest. And so, falling down on his face, he will adore God, affirming that God is among you indeed.

Revelation 2:18,19 And to the angel of the church of Thyatira write: These things saith the Son of God, who hath his eyes like to a flame of fire and his feet like to fine brass. . . .