Colossians 2:11

2:11 In him you also were circumcised – not, however, with a circumcision performed by human hands, but by the removal of the fleshly body, that is, through the circumcision done by Christ.

Colossians 2:23

2:23 Even though they have the appearance of wisdom with their self-imposed worship and false humility achieved by an unsparing treatment of the body – a wisdom with no true value – they in reality result in fleshly indulgence.