Salaam Islamist,
With utmost respect, I kindly request you to substantiate first your point "it is the human nature to incline" with supporting verses and any evidences. You are asking me to prove something based on your assumption.
Humans are created weak (4.28) and I am truly surprised that you would even ask evidence for this.
What is the point of the Qur'an if it not to guide? The Qur'an is meant for both humans and messengers. Messengers needed guidance as much as other believers. Remember, I am only talking about the potential to make errors of judgement and not outright following satan.....therefore the verse you quoted (15.39-42) are not relevant for the purposes we are discussing.
Like I said earlier, I feel that in your mind you cannot accept the potential of messengers to make at time errors of judgement. You will therefore seek to confirm your beliefs from any verses to prove your point even though there are clear verses which challenge your understanding.
Why did the Prophet make errors of judgement where Allah (swt) had to admonish him? Surely I don't have to quote all these verses to you.
The potential is there, please consider this. The messengers are also under trial like other believers and sometimes can make errors of judgement.
"and thou didst fear mankind whereas Allah hath a better right that thou shouldst fear Him." (33.37)
What happened here?
Why did the Prophet fear people when he should have feared Allah (swt)? Did he not have taqwa or was it simply a slip / a slight error of judgement?
Why were believers asked in the following verse to follow the Prophet in what is right?
"and that they will not disobey you in any just matter (or what is right / good)" (60.12)
Why did the Qur'an simply not say follow the Prophet in everything?
Does that mean that at times the Prophet's judgement could be questioned?
We fail to appreciate the Quranic verses in the correct sense. This is the problem.
Without meaning to sound rude at all, I could say that this is exactly what is happening in your understanding. Certainly at the moment you have not provided any clear evidence.
Thanks. Saba.