12, 13. Therefore, brethren, we are debtors, not to the flesh, to live after the flesh—"Once we were sold under sin (Ro 7:14); but now that we have been set free from that hard master and become servants to Righteousness (Ro 6:22), we owe nothing to the flesh, we disown its unrighteous claims and are deaf to its imperious demands." Glorious sentiment!