Upset over Disbelief
If their rejection weighs heavily on you, then if you can find a tunnel into the earth or a ladder to the sky to bring them a sign, do so! But if Allah had willed, He could have guided them all. So do not be among the ignorant.
6:35And if their aversion is grievous unto thee, then, if thou canst, seek a way down into the earth or a ladder unto the sky that thou mayst bring unto them a portent (to convince them all)! - If Allah willed, He could have brought them all together to the guidance - So be not thou among the foolish ones.