وَلَقَدْ أَنزَلْنَا إِلَيْكُمْ ايَاتٍ مُّبَيِّنَاتٍAnd indeed We have sent down for you Ayat that make things plain,meaning, in the Qur'an there are Ayat which are clear and explain matters in detail.وَمَثَلً مِّنَ الَّذِينَ خَلَوْا مِن قَبْلِكُمْand the example of those who passed away before you,means, reports about the nations of the past and what happened to them when they went against the commandments of Allah, as Allah says:فَجَعَلْنَـهُمْ سَلَفاً وَمَثَلً لِّلٌّخِرِينَAnd We made them a precedent, and an example to later generations. (43:56)We made them a lesson, i.e., a rebuke for committing sin and forbidden deeds.وَمَوْعِظَةًand an admonition,لِّلْمُتَّقِينَfor those who have Taqwa. meaning, for those who remember and fear Allah.