Matthew 7:13-14

Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. But small is the gate and narrow the road that leads to life, and only a few find it.

Galatians 6:7-8

Do not be deceived: God cannot be mocked. A man reaps what he sows. Whoever sows to please the flesh from the flesh will reap destruction; whoever sows to please the Spirit, from the Spirit will reap eternal life.