We must be very careful not to spoil our spiritual lives. We should understand that, it could take many years to cultivate our Krishna consciousness, but if we make foolish offences it is all covered. You cannot destroy devotional service. But it is completely covered by the cloud of illusion and it may cover all your spiritual progress for many births. Years and years of cultivating the tree of bhakti and then if we misbehave towards other Vaisnavas, it is all covered, lost. You may not be able to find it for many lifetimes. So we have to be very careful. Not only about offending Vaisnavas, but also performing sinful activities that are completely against the principles of Krishna consciousness.