New Living Translation
Many of his disciples said, “This is very hard to understand. How can anyone accept it?”

American Standard Version
Many therefore of his disciples, when the heard this , said, This is a hard saying; who can hear it?

Berean Study Bible
On hearing it, many of His disciples said, “This is a difficult teaching. Who can accept it?”

Douay-Rheims Bible
Many therefore of his disciples, hearing it, said: This saying is hard, and who can hear it?

English Revised Version
Many therefore of his disciples, when they heard this, said, This is a hard saying; who can hear it?

King James Bible
Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it?

World English Bible
Therefore many of his disciples, when they heard this, said, "This is a hard saying! Who can listen to it?"

Young's Literal Translation
many, therefore, of his disciples having heard, said, 'This word is hard; who is able to hear it?'

John 6:60 Additional Translations ...