Indeed, those who have believed then disbelieved, then believed then disbelieved, and then increased in disbelief - never will Allāh forgive them, nor will He guide them to a way.
Those who repeatedly disbelieve after accepting faith – by entering into the faith, then leaving it, entering into it again, then leaving again, and so on – and then continue in disbelief until they die as disbelievers, Allah will not forgive their sins and nor will He bring them to the straight path that leads to Him.