Surah 14

Surah 14:4

"We have not sent any messenger except in the language of his people, so that he might make (things) clear to them. Then God leads astray whomever He pleases and guides whomever He pleases. He is the Mighty, the Wise."
Every Prophet was sent with the Language of His People; Guidance or Misguidance follows the Explanation Verses 14:4
Show Full Scripture Context (14:4) — 1 Verse
Verse 4

وَمَآ أَرۡسَلۡنَا مِن رَّسُولٍ إِلَّا بِلِسَانِ قَوۡمِهِۦ لِيُبَيِّنَ لَهُمۡۖ فَيُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهۡدِي مَن يَشَآءُۚ وَهُوَ ٱلۡعَزِيزُ ٱلۡحَكِيمُ

We have not sent any messenger except in the language of his people, so that he might make (things) clear to them. Then God leads astray whomever He pleases and guides whomever He pleases. He is the Mighty, the Wise.

Allah is Kind and Compassionate with His creation, sending Messengers to them from among them and speaking their language, so that they are able to understand the Message that the Messengers were sent with. Allah said next,
{Then Allah misleads whom He wills and guides whom He wills.}

after the proof and evidence have been established for the people, Allah misguides whom He wills from the path of guidance and guides whom He wills to the truth,
{And He is the All-Mighty,} whatever He wills occurs and whatever He does not will never occurs,
{the All-Wise.} in His decisions, misleading those who deserve to be misled and guiding those who deserve guidance. This is from Allah's wisdom with His creation, every Prophet He sent to a people spoke their language and everyone of these Prophets were only sent to their people. Muhammad bin 'Abdullah, Allah's Messenger, peace and blessings be upon him, was sent to all people. It is recorded in the Two Sahihs that Jabir said that the Messenger of Allah said...

About this Source & Scholarly Authority (Tafsir Ibn Kathir)

Universal Sunni Consensus: Tafsir al-Qur'an al-Azim by Hafiz Ibn Kathir (701–774 AH / 1301–1373 AD) is universally regarded across all major schools of Sunni Islam (traditional, Salafi, Ash'ari) as the most authoritative classical exegesis. It is prized because it relies on Tafsir bil-Ma'thur—interpreting the Quran using the Quran itself, authentic Hadiths of Prophet Muhammad, and recorded statements of the early Companions (Sahabah).

Standard English Edition: This text is from the standard 10-volume English abridgment published by Dar-us-Salam Publications (supervised by Shaykh Safiur-Rahman Al-Mubarakpuri), which is the official, most widely distributed English Quranic commentary in mosques and Islamic libraries worldwide today.