Contradiction with Luke 9:62
This verse states that no one who looks back after starting a task is fit for the kingdom of God, suggesting complete forward focus, while Hebrews 11:15 acknowledges the possibility of returning to one's past.
Luke 9:62: And Jesus said unto him, No man, having put his hand to the plough, and looking back, is fit for the kingdom of God.
Contradiction with Philippians 3:13-14
Paul emphasizes forgetting the past and straining towards what is ahead, contrary to Hebrews 11:15 which considers the potential for returning to it.
Philippians 3:13-14: Brethren, I count not myself to have apprehended: but [this] one thing [I do], forgetting those things which are behind, and reaching forth unto those things which are before,