John 2:22-25

So when He was raised from the dead, His disciples remembered that He said this; and they believed the Scripture and the word which Jesus had spoken. Now when He was in Jerusalem at the Passover, during the feast, many believed in His name, observing His signs which He was doing. But Jesus, on His part, was not entrusting Himself to them, for He knew all men, and because He did not need anyone to testify concerning man, for He Himself knew what was in man.