He is more concerned for our wellbeing than our own parents

In The Name of Allah, The Most Merciful, The Bestower of Mercy.

لَقَدْ جَآءَكُمْ رَسُولٌ مِّنْ أَنفُسِكُمْ عَزِيزٌ عَلَيْهِ مَا عَنِتُّمْ حَرِيصٌ عَلَيْكُم بِٱلْمُؤْمِنِينَ رَءُوفٌ رَّحِيمٌ

Verily, there has come unto you a Messenger (Muhammad) from amongst yourselves. It grieves him that you should receive any injury or difficulty. He was is anxious over you (to be rightly guided, to repent to Allah, and beg Him to pardon and forgive your sins, in order that you may enter Paradise and be saved from the punishment of the Hell-fire), for the believers (he is) full of pity, kind, and merciful. [Al-Tawbah 128]

Allah, the Exalted, bestowed His grace upon His believing servants by sending them the unlettered Prophet who is from among themselves. They are familiar with his circumstances and are able to learn from him, willingly submitting to his guidance. He, peace and blessings of Allah be upon him, is very sincere in advising them and strives for their welfare.

“It grieves him that you should receive any injury or difficulty“, meaning, it is difficult for him to see the matters that trouble you and cause you hardship.

“He is anxious over you (to be rightly guided“, meaning, he loves good for you and exerts his utmost effort to deliver it to you. He is eager for you to be guided to Iman and hates evil for you, and strives diligently to steer you away from it.

“for the believers (he is) full of pity, kind, and merciful“, meaning, very kind and merciful to them, even more than their own parents. Due to this, his rights take precedence over all other rights of creation, and it is obligated to the Ummah to believe in him, honour him,  support him, and show him respect.

 فَإِن تَوَلَّوْا فَقُلْ حَسْبِيَ اللَّهُ لَا إِلَٰهَ إِلَّا هُوَ ۖ عَلَيْهِ تَوَكَّلْتُ ۖ وَهُوَ رَبُّ الْعَرْشِ الْعَظِيمِ

But if they turn away, say (O Muhammad): “Allah is sufficient for me. La ilaha illa Huwa (none has the right to be worshipped but He), in Him I put my trust and He is the Lord of the Mighty Throne.

An Excerpt from Tafsir As-Sadi.