Romans 14:1 KJV
Him that is weak in the faith receive ye, but not to doubtful disputations.
Romans 14:1 ESV
As for the one who is weak in faith, welcome him, but not to quarrel over opinions.
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We are to be likeminded but that does not mean every person’s faith is equal in measure.
For by the grace given to me I say to everyone among you not to think of himself more highly than he ought to think, but to think with sober judgment, each according to the measure of faith that God has assigned.
We might know all things but that does not mean that we should weaken the faith of anyone by words or acts.