John 14:5
Thomas saith unto him, Lord, we know not whither thou goest; how know we the way?
John 11:16
Thomas therefore, who is called Didymus, said unto his fellow-disciples, Let us also go, that we may die with him.
Mark 8:17-18
And Jesus perceiving it saith unto them, Why reason ye, because ye have no bread? do ye not yet perceive, neither understand? have ye your heart hardened?
Mark 9:19
And he answereth them and saith, O faithless generation, how long shall I be with you? how long shall I bear with you? bring him unto me.
Luke 24:25
And he said unto them, O foolish men, and slow of heart to believe in all that the prophets have spoken!
John 15:12
This is my commandment, that ye love one another, even as I have loved you.
John 20:25-28
The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my hand into his side, I will not believe.
Hebrews 5:11-12
Of whom we have many things to say, and hard of interpretation, seeing ye are become dull of hearing.