Verses with the word err in the New Testament (6 verses):
Matthew 22:29
Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God.
Mark 12:24
And Jesus answering said unto them, Do ye not therefore err, because ye know not the scriptures, neither the power of God?
Mark 12:27
He is not the God of the dead, but the God of the living: ye therefore do greatly err.
Hebrews 3:10
Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways.
James 1:16
Do not err, my beloved brethren.
James 5:19
Brethren, if any of you do err from the truth, and one convert him;