John Gill Commentary 1 Chronicles 11:19

"and said, My God forbid it me, that I should do this: shall I drink the blood of these men that have put their lives in jeopardy? for with [the jeopardy of] their lives they brought it. Therefore he would not drink it. These things did the three mighty men." — 1 Chronicles 11:19 (ASV)

(See Gill on 1 Chronicles 11:1)