John 14:5
Thomas said unto him, Lord, we know not where you go; and how can we know the way?
John 11:16
Then said Thomas, who is called Didymus, unto his fellow disciples, Let us also go, that we may die with him.
Mark 8:17-18
And when Jesus knew it, he said unto them, Why reason you, because you have no bread? perceive you not yet, neither understand? have you your heart yet hardened?
Mark 9:19
He answered him, and said, O faithless generation, how long shall I be with you? how long shall I bear with you? bring him unto me.
Luke 24:25
Then he said unto them, O foolish ones, and slow of heart to believe all that the prophets have spoken:
John 15:12
This is my commandment, That you love one another, 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 finger into the print of the nails, and thrust my hand into his side, I will not believe.
Hebrews 5:11-12
Of whom we have many things to say, and hard to explain, seeing you are dull of hearing.