וַיֹּ֡אמֶר חָלִילָה֩ לִּ֨י מֵאֱלֹהַ֜י מֵעֲשׂ֣וֹת זֹ֗את הֲדַ֣ם הָאֲנָשִׁים֩ הָאֵ֨לֶּה אֶשְׁתֶּ֤ה בְנַפְשׁוֹתָם֙ כִּ֣י בְנַפְשׁוֹתָ֣ם הֱבִיא֔וּם וְלֹ֥א אָבָ֖ה לִשְׁתּוֹתָ֑ם אֵ֣לֶּה עָשׂ֔וּ שְׁלֹ֖שֶׁת הַגִּבּוֹרִֽים׃
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.
Read kabbalistic (mystical) interpretation of I Chronicles 11:19: and classical mystical sources.