The Weak and the Strong

1 Accept the one whose faith is weak, without quarreling over disputable matters.

Read Romans 14:1 Using Other Translations

Him that is weak in the faith receive ye, but not to doubtful disputations.
As for the one who is weak in faith, welcome him, but not to quarrel over opinions.
Accept other believers who are weak in faith, and don’t argue with them about what they think is right or wrong.