'Difficult' in the Bible

For this nation’s heart has grown hard,And with their ears they hardly hear,And they have [tightly] closed their eyes,Otherwise they would see with their eyes,And hear with their ears,And understand with their heart, and turn [to Me]And I would heal them [spiritually].’

Jesus said to His disciples, “I assure you and most solemnly say to you, it is difficult for a rich man [who clings to possessions and status as security] to enter the kingdom of heaven.

Jesus looked at him and said, “How difficult it is for those who are wealthy to enter the kingdom of God!

When many of His disciples heard this, they said, “This is a difficult and harsh and offensive statement. Who can [be expected to] listen to it?”

speaking about these things as he does in all of his letters. In which there are some things that are difficult to understand, which the untaught and unstable [who have fallen into error] twist and misinterpret, just as they do the rest of the Scriptures, to their own destruction.