The Mountain - 52:18 They delight in what their Lord has given them. Their Lord has protected them from the torment of Hell.
The believers will not be bored with the pleasures of Paradise:
Originator/35:35 He it is Who, out of His grace, has placed us in a abode of rest. There we shall never feel tired nor weary.

The Prostration/32:17 No one knows what joy and happiness awaits them as a reward for what they did.