What the Insight book says about Luke's writings:
it-2 p. 130 - "Immediately Judas left the group'. "A comparison of Matthew 26:20-29 with John 13:21-30 indicates that he departed before Jesus instituted the celebration of the Lord’s Evening Meal. Luke’s presentation of this incident evidently is not in strict chronological order , for Judas had definitely left by the time Christ commended the group for having stuck with him; that would not fit Judas, nor would he have been taken into the "covenant for a kingdom."—Lu 22:19-30.
(Judas left after having taken the bread & wine of the New Covenant, as instructed by Jesus, then he left before the Kingdom Covenant was concluded. Luke was inspired by the Holy Spirit to write this account. Did Luke & the Holy Spirit get it wrong? )
What the All Scripture book says about Luke's writings:
si p. 187 par. 1 Bible Book Number 42—Luke
THE Gospel of Luke was written by a man with a keen mind and a kind heart, and this fine blend of qualities, with the guidance of God’s spirit, has resulted in an account that is both accurate and full of warmth and feeling. In the opening verses, he says, "I resolved also, because I have traced all things from the start with accuracy, to write them in logical order to you."
His detailed, meticulous presentation fully bears out this claim.
—Luke 1:3.Judas being included in the New Covenant creates a conflict with "explained" doctrine.