Christians accept the Biblical record. Without it, how should there be a Christ? Matthew states that Jesus rode
an ass and a colt the foal of an ass. He sent the disciples to collect the creatures but as John points out
John 12:14 And Jesus, when he had found a young ass, sat thereon; as it is written
to confirm the Biblical prophecy. God is always consistent, even in the tiniest detail cared to be examined; are you saying His prophets got it wrong?
Or (even worse) that the apostles somehow lied – after so many years to get their stories straight, of course they'd agree! If you think they contradict one another you'd need to show where.