Mosiah 18:32

But behold, it came to pass that the king, having discovered a movement among the people, sent his servants to watch them. Therefore on the day that they were assembling themselves together to hear the word of the Lord, they were discovered unto the king.

But the king found out that the people were moving around. He sent his servants to watch them. So on the day they gathered to hear the word of the Lord, the king found out.

But the king noticed something was happening among the people, so he sent spies to watch them. On the very day they were gathering to hear the Lord’s word, the king’s spies found them.