John Chrysostom
Catena Aurea · Johannesevangelium 1
Jesus saw Nathanael coming to him, and saith of him, Behold an Israelite indeed, in whom is no guile! Nathanael saith unto him, Whence knowest thou me? Jesus answered and said unto him, Before that Philip called thee, when thou wast under the fig tree, I saw thee. Nathanael answered and saith unto him, Rabbi, thou art the Son of God; thou art the King of Israel. Jesus answered and said unto him, Because I said unto thee, I saw thee under the fig tree, believest thou? thou shalt see greater things than these. And he saith unto him, Verily, verily, I say unto you, Hereafter ye shall see heaven open, and the angels of God ascending and descending upon the Son of man.
(Hom. xx) That our Lord then had this knowledge, had penetrated into his mind, had not blamed but praised his hesitation, proved to Nathanael that He was the true Christ: Nathanael answered and saith unto Him, Rabbi, Thou art the Son of God, Thou art the King of Israel: as if he said, Thou art He who was expected, thou art He who was sought for. Sure proof being obtained, he proceeds to make confession; herein shewing his devotion, as his former hesitation had shewn his diligence.