Lack of sin and Sinlessness

Sinlessness and lack of sin are semantically related. In some cases you can use "Sinlessness" instead a noun phrase "Lack of sin".

Sinlessness noun - The state of being unsullied by sin or moral wrong; lacking a knowledge of evil.

Lack of sin and sinlessness are semantically related. You can use "Lack of sin" instead a noun "Sinlessness".