وَٱللَّهُ أَعْلَمُ بِمَا يُوعُونَ
Sentence structure
ٱللَّهُ is the nominative topic and أَعْلَمُ its nominative elative predicate. In بِمَا, مَا is a genitive relative pronoun; يُوعُونَ is its relative clause with an omitted returning object.
Ayah summary
Allah fully knows the denial, hostility, and enmity hidden in their hearts.
وَٱللَّهُ — And Allah
Grammar: وَ is resumptive and ٱللَّهُ a nominative proper noun functioning as the topic.
أَعْلَمُ — (is) most knowing
Grammar: A nominative elative noun functioning as the predicate of ٱللَّهُ; it is diptote on the pattern afʿal.
بِمَا — of what
Grammar: بِ is a preposition and relative مَا is in the genitive position; the phrase is linked to أَعْلَمُ.
يُوعُونَ — they keep within themselves
Grammar: A Form IV third-person masculine-plural imperfect forming the relative clause. Attached و is the subject, final ن marks the indicative, and the returning object is omitted.