Allah has promised that whoever performs these prayers will enter paradise.He who does not perform the prayers has not such promise and allah punish him or forgive him..
The Prophet Muhammad Sallallaahu Alayhi Wa Aalihi Wa Sallam said: “The difference between us and them is Salaah. Whoever abandons it has disbelieved.” [Ahmad, Abu Dawud, at-Tirmidhi, an-Nasaa'i, and Ibn Majah]