nifaq aqidah is more dangerous than nifaq amali. the al-quran is full of descriptions of munafiq characteristics whereby they show off their piety and hide their lack of belief. in facy, they are showing acts of disbelief and are even worse than the kafir. allah s.w.t says in the al-quran:
''and there are people who say, 'we do believe in god and the last day,' while they do not (really) believe. they would decieve god and those who have attained to faith-while they deceive none but themselves, and perceive it not.'' al-baqarah: 8-9
in the al-quran, allah s.w.t threatens the munafiq with heavy punishment on the day of judgement as follows:
'' verily, the hypocrites shall be in the lowest depth of the fire, and you will find none who could succour them.'' al-nisaa':145