The Apostle Paul
Romans 6:11ESV·traditional attribution

So you also must consider yourselves dead to sin and alive to God in Christ Jesus.

John Calvin Reformed @genevareformer

11. So count ye also yourselves, etc. Now is added a definition of that analogy to which I have referred. For having stated that Christ once died to sin and lives for ever to God, he now, applying both to us, reminds us how we now die while living, that is, when we renounce sin.

Matthew Henry Presbyterian @wholebiblehenry

The apostle's transition, which joins this discourse with the former, is observable: "What shall we say then? Rom 6:1. What use shall we make of this sweet and comfortable doctrine? Shall we do evil that good may come, as some say we do? Rom 3:8. Shall we continue in sin that grace may abound?

Commenting on Romans 6:1-23

John Gill Reformed Baptist @doctorgill

Likewise reckon ye also yourselves,.... Two things the apostle would have believers consider of themselves, and reckon themselves, to be, in consequence of their relation to Christ, who was dead, but is alive, and as agreeable thereunto: the one is, that they would look upon themselves to be dead indeed unto sin: believe their discharge from it, and not fear condemnation and death on account...