Contradiction with Matthew 28:20
Matthew 9:15 suggests the bridegroom will be taken away, whereas Matthew 28:20 implies Jesus will always be with His followers.
Matthew 28:20: Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, [even] unto the end of the world. Amen.
Contradiction with Hebrews 13:5
Matthew 9:15 implies a time when Jesus is not present, while Hebrews 13:5 states He will never leave or forsake His followers.
Hebrews 13:5: [Let your] conversation [be] without covetousness; [and be] content with such things as ye have: for he hath said, I will never leave thee, nor forsake thee.
Contradiction with John 16:7
Matthew 9:15 suggests a future separation, but John 16:7 says it is beneficial for the disciples for Jesus to go away to send the Comforter.
John 16:7: Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.
Contradiction with John 14:18
Matthew 9:15 speaks of being without the bridegroom, whereas John 14:18 assures that Jesus will not leave them comfortless.
John 14:18: I will not leave you comfortless: I will come to you. [comfortless: or, orphans]
Paradox #1
Matthew 9:15 might be seen as having a contradiction or conflict because it suggests that certain actions or practices are appropriate at one time but not at another. This could be confusing as it implies that moral behavior can change based on the situation, which might seem inconsistent with the idea of unchanging moral principles.