כָּל־אֵ֜לֶּה אַנְשֵׁ֣י מִלְחָמָה֮ עֹדְרֵ֣י מַעֲרָכָה֒ בְּלֵבָ֤ב שָׁלֵם֙ בָּ֣אוּ חֶבְר֔וֹנָה לְהַמְלִ֥יךְ אֶת־דָּוִ֖יד עַל־כָּל־יִשְׂרָאֵ֑ל וְ֠גַם כָּל־שֵׁרִ֧ית יִשְׂרָאֵ֛ל לֵ֥ב אֶחָ֖ד לְהַמְלִ֥יךְ אֶת־דָּוִֽיד׃
All these, being men of war, that could order the battle array, came with a whole heart to Hebron, to make David king over all Israel; and all the rest also of Israel were of one heart to make David king.
Read kabbalistic (mystical) interpretation of I Chronicles 12:39: and classical mystical sources.