The Quran

فَاتَّقُوا اللَّهَ مَا استَطَعتُم وَاسمَعوا وَأَطيعوا وَأَنفِقوا خَيرًا لِأَنفُسِكُم ۗ وَمَن يوقَ شُحَّ نَفسِهِ فَأُولٰئِكَ هُمُ المُفلِحونَ

Ali Unal

Keep, then, from disobedience to God in reverence for Him and piety as far as you can,¹ and listen attentively and submit (to His commands), and obey Him, and spend (in His cause and for the needy), as it is to the betterment of your souls. Whoever is guarded against the avarice of his soul, those are they who are truly prosperous.²

This statement is not contradictory with, Keep from disobedience to God in reverent piety with all the reverence that is due to Him (3: 102), nor does the former abrogate the latter. God should be revered and obeyed as He should because His position as God requires this. In fact, every position requires respect and obedience to the extent of its greatness. However, each human being has a capacity for respect and obedience particular to himself or herself; he or she cannot go beyond this. But as we cannot know the limits of our own capacity, we must try to revere and obey God as His being God requires us to do, to the utmost of our capacity.
This verse explains how people can be saved from the enmity of their spouses or children and be successful in the trial of their worldly possessions and children.