Matthew 19:11

But he said unto them, All men cannot receive this saying, save they to whom it is given.

Cross-references

1 Corinthians 7:2 gives the practical reason why not everyone can accept celibacy: marriage is the norm to avoid immorality.

1 Corinthians 7:7 directly echoes Jesus' teaching that celibacy is a gift from God, not given to all.

1 Corinthians 7:9 explains why not everyone can accept celibacy: if lacking self-control, it's better to marry.