1 Corinthians 3:2-3; 1 Corinthians 12:31; 1 Corinthians 15:17

2 I gave you milk to drink, not solid food; for you were not yet able to receive it. Indeed, even now you are not yet able, 3 for you are still fleshly. For since there is jealousy and strife among you, are you not fleshly, and are you not walking like mere men?
31 But earnestly desire the greater gifts. A nd I show you a still more excellent way.
17 and if Christ has not been raised, your faith is worthless; you are still in your sins.