John 14:5
Thomas says to Him, "Lord, we know not whither Thou art going; how do we know the way?"
John 11:16
Thomas, who is called Dydimus, said, therefore, to His fellow-disciples, "Let us also go, that we may die with Him."
Mark 8:17-18
And perceiving it, He saith to them, "Why are ye reasoning because ye have no bread? Do ye not yet perceive, nor understand? Have ye your heart hardened?
Mark 9:19
And He, answering, saith to them, "O faithless generation! how long shall I be with you! how long shall I bear with you? Bring him to Me."
Luke 24:25
And He said to them, "O inconsiderate and slow in heart to believe in all that the prophets spake!
John 15:12
This is My commandment, that ye love one another, even as I loved you.
John 20:25-28
The other disciples, therefore, said to him, "We have seen the Lord!" But he said to them, "Unless I see in His hands the print of the nails, and put my finger into the print of the nails, and press my hand into His side, I will not believe."
Hebrews 5:11-12
Concerning Whom we have much to say and difficult to explain, since ye have become dull of hearing.