1 Corinthians 7:30; 1 Corinthians 11:2; 1 Corinthians 15:2

1 Corinthians 7:30

30 those who mourn, as if they did not; those who are happy, as if they were not; those who buy something, as if it were not theirs to keep;

1 Corinthians 11:2

2 I praise you for remembering me in everything and for holding to the traditions just as I passed them on to you.

1 Corinthians 15:2

2 By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.