11 And David saved neither man nor woman alive, to bring tidings to Gath, saying, Lest they should tell on us, saying, So did David, and so will be his manner all the while he dwelleth in the country of the Philistines.
David did not bring to life a man and a woman, etc. Christ forbids those converted to Him from living in sins. Just as first showing this to the teacher of His Church, He commands the multitudes of impure hearts, saying: Rise, Peter, kill and eat (Acts X). And Paul teaches that they are not dead to sin, but living to God in Christ Jesus (Ephesians II). But neither does He now command believers to undergo martyrdom or deaths for His name from the impious.
Saying, Lest perhaps they speak, etc. Therefore, he did not bring to life, lest they speak against him. For the listener bears witness against his teacher, who, less perfectly educated either in believing or in acting, shows himself less extinguished by improper action or thought.
[AD 735] Bede on 1 Samuel 27:11