Worshiping anyone aside from Allah in any way shape or form is shirk. Allah is the one and only God, and we must not direct our worship to anyone but Allah. Shirk is the only unforgivable sin in Islam, if one dies without repenting from it. Any other sin, can be forgiven at the discretion of Allah. Allah has informed us in the Quran:
إِنَّ اللَّهَ لَا يَغْفِرُ أَن يُشْرَكَ بِهِ وَيَغْفِرُ مَا دُونَ ذَٰلِكَ لِمَن يَشَاءُ ۚ وَمَن يُشْرِكْ بِاللَّهِ فَقَدْ ضَلَّ ضَلَالًا بَعِيدًا
Saheeh International English Translation: “Indeed, Allah does not forgive association with Him, but He forgives what is less than that for whom He wills. And he who associates others with Allah has certainly gone far astray.” [the Quran, chapter 4 (an-Nisaa), verse 116]
Therefore it is supremely important for us to avoid shirk. Worship must only be directed to Allah. Not only that, we must not intend from our worship to show off or to gain respect or for any other reason other than to please Allah alone. Always, ensure our worship is performed for the sake of Allah alone. Make our intentions pure for every worship, reviewing it before, during and after our worship.
Bid’ah is doing our worship in any way shape or form other than the way shape or form that the Prophet (ﷺ) taught, did himself, recommended or approved.
Bid’ah worship is rejected no matter how much we do it, how focused or how sincerely we do it. Intentionally or unintentionally, we see a lot of worship done by Muslims that have no basis in the Sunnah of the Prophet (ﷺ) but were innovated much much later by people that came afterwards. Therefore, it is very important to ascertain that the worship is as it was taught by the Prophet (ﷺ). Furthermore, every bid’ah is leads to misguidance and every misguidance leads to the hellfire:
أَخْبَرَنَا عُتْبَةُ بْنُ عَبْدِ اللَّهِ، قَالَ أَنْبَأَنَا ابْنُ الْمُبَارَكِ، عَنْ سُفْيَانَ، عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ، عَنْ أَبِيهِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَقُولُ فِي خُطْبَتِهِ يَحْمَدُ اللَّهَ وَيُثْنِي عَلَيْهِ بِمَا هُوَ أَهْلُهُ ثُمَّ يَقُولُ ” مَنْ يَهْدِهِ اللَّهُ فَلاَ مُضِلَّ لَهُ وَمَنْ يُضْلِلْهُ فَلاَ هَادِيَ لَهُ إِنَّ أَصْدَقَ الْحَدِيثِ كِتَابُ اللَّهِ وَأَحْسَنَ الْهَدْىِ هَدْىُ مُحَمَّدٍ وَشَرَّ الأُمُورِ مُحْدَثَاتُهَا وَكُلَّ مُحْدَثَةٍ بِدْعَةٌ وَكُلَّ بِدْعَةٍ ضَلاَلَةٌ وَكُلَّ ضَلاَلَةٍ فِي النَّارِ ” . ثُمَّ يَقُولُ ” بُعِثْتُ أَنَا وَالسَّاعَةُ كَهَاتَيْنِ ” . وَكَانَ إِذَا ذَكَرَ السَّاعَةَ احْمَرَّتْ وَجْنَتَاهُ وَعَلاَ صَوْتُهُ وَاشْتَدَّ غَضَبُهُ كَأَنَّهُ نَذِيرُ جَيْشٍ يَقُولُ ” صَبَّحَكُمْ مَسَّاكُمْ ” . ثُمَّ قَالَ ” مَنْ تَرَكَ مَالاً فَلأَهْلِهِ وَمَنْ تَرَكَ دَيْنًا أَوْ ضِيَاعًا فَإِلَىَّ أَوْ عَلَىَّ وَأَنَا أَوْلَى بِالْمُؤْمِنِينَ ”
It was narrated that Jabir bin ‘Abdullah said: “In his Khutbah the Messenger of Allah (ﷺ) used to praise Allah as He deserves to be praised, then he would say: ‘Whomsoever Allah (SWT) guides, none can lead him astray, and whomsoever Allah sends astray, none can guide. The truest of word is the Book of Allah and best of guidance is the guidance of Muhammad. The worst of things are those that are newly invented; every newly-invented thing is an innovation and every innovation is going astray, and every going astray is in the Fire.’ Then he said: ‘The Hour and I have been sent like these two.’ Whenever he mentioned the Hour, his cheeks would turn red, and he would raise his voice and become angry, as if he were warning of an approaching army and saying: ‘An army is coming to attack you in the morning, or in the evening!’ (Then he said): ‘Whoever leaves behind wealth, it is for his family, and whoever leaves behind a debt or dependents, then these are my responsibility, and I am the most entitled to take care of the believers.'”
And Allah knows best.