The Criterion
وَهُوَ ٱلَّذِى خَلَقَ مِنَ ٱلْمَآءِ بَشَرًۭا فَجَعَلَهُۥ نَسَبًۭا وَصِهْرًۭا ۗ وَكَانَ رَبُّكَ قَدِيرًۭا
And it is He who has created from water a human being and made him [a relative by] lineage and marriage. And ever is your Lord competent [concerning creation].
Nearby ayahs help place verse 25:54 in sequence and meaning.
فَلَا تُطِعِ ٱلْكَـٰفِرِينَ وَجَـٰهِدْهُم بِهِۦ جِهَادًۭا كَبِيرًۭا
So do not obey the disbelievers, and strive against them with the Qur'an a great striving.
۞ وَهُوَ ٱلَّذِى مَرَجَ ٱلْبَحْرَيْنِ هَـٰذَا عَذْبٌۭ فُرَاتٌۭ وَهَـٰذَا مِلْحٌ أُجَاجٌۭ وَجَعَلَ بَيْنَهُمَا بَرْزَخًۭا وَحِجْرًۭا مَّحْجُورًۭا
And it is He who has released [simultaneously] the two seas, one fresh and sweet and one salty and bitter, and He placed between them a barrier and prohibiting partition.
وَيَعْبُدُونَ مِن دُونِ ٱللَّهِ مَا لَا يَنفَعُهُمْ وَلَا يَضُرُّهُمْ ۗ وَكَانَ ٱلْكَافِرُ عَلَىٰ رَبِّهِۦ ظَهِيرًۭا
But they worship rather than Allah that which does not benefit them or harm them, and the disbeliever is ever, against his Lord, an assistant [to Satan].
وَمَآ أَرْسَلْنَـٰكَ إِلَّا مُبَشِّرًۭا وَنَذِيرًۭا
And We have not sent you, [O Muhammad], except as a bringer of good tidings and a warner.