The mighty men that followed David were of one mind and heart to make him King. Their recognition of David's anointing may have been the most significant quality of these Mighty Men. What was it in David that drew out this deep loyalty? I believe it was God's Holy Spirit which David received when Samuel anointed him king.[1 Samuel 16:13].
50,000 soldiers from the tribe of Zebulun served in David's army with UNDIVIDED (some translations: "not double-hearted") hearts. Can you imagine a skilled army with this level of loyalty and devotion?
When Gideon was called by God, a mighty man of valor, his first task was to tear down the idolatrous altars of Baal and Asherah at his father’s house. Though he was ready to obey this command, his obedience was mixed with fear, so he destroyed the idols at night [Judges 6:27]. When the men of the city realized it was Gideon who destroyed their idols, their allegiance to Baal and Asherah drove them to demand Gideon's life.