Acts 17:20
For thou bringest certain strange things to our ears; we would therefore know, what these things mean?
1 Peter 4:4
Wherein they think it strange, that ye run not with them to the same excess of riot,
Matthew 19:23-25
Then said Jesus to his disciples, Verily I say to you, a rich man shall with difficulty enter into the kingdom of heaven.
Mark 9:10
And they laid hold on that saying, questioning one with another, What meaneth, Till he were risen from the dead?
Mark 10:24-26
And the disciples were astonished at his words. But Jesus answering again saith to them, Children, how hard is it for them that trust in riches, to enter into the kingdom of God?
John 6:60
Many of his disciples hearing it, said, This is an hard saying: who can hear it?
John 7:35-36
Then said the Jews among themselves, Whither will he go, that we shall not find him? Will he go to the dispersed among the Greeks, and teach the Greeks?
Acts 2:12
And they were all amazed, and were in doubt, saying one to another, What can this mean?
Acts 10:17
Now while Peter doubted in himself, what the vision he had seen should mean, behold the men sent by Cornelius, having inquired out Simon's house, stood at the gate,
1 Corinthians 1:18
For the doctrine of the cross is indeed to them that perish foolishness; but to us who are saved, it is the power of God.
1 Corinthians 1:23
to the Jews a stumbling block, and to the Greeks foolishness:
1 Corinthians 2:14
But the natural man receiveth not the things of the Spirit; for they are foolishness to him: neither can he know them, because they are spiritually discerned.
Hebrews 5:11
Concerning whom we have many things to say, and hard to be explained, seeing ye are become dull of hearing.