Perhaps the Hour is Near

Muslims will say that Jesus didn't know the Hour. Does Allah?

S 33:63 People ask you about the Hour. Say: The knowledge of it is only with Allah. And what will make you know? Perhaps the Hour is near.

Relevant part: لَعَلَّ السَّاعَةَ تَكُونُ قَرِيبًا la’alla al-sa’ata takunu qariban.

S 42:17 Allah is the one who has sent down the book with truth and the balance. And what will make you know? Perhaps the Hour is near.

Relevant part: لَعَلَّ السَّاعَةَ قَرِيبٌ la’alla al-sa’ata qaribun.

In the first verse we find takunu, a feminine verb agreeing with sa’ah but the adjective is masculine. In the second the verb is missing and the adjective is again masculine.

The Qur'an: Grammatical Errors

“Don’t Shoot Us, We Are Just the Messenger” : Another Grammatical Mistake in the Qur’an

Why 'perhaps'? Is there a doubt on the author's part that Allah knows the Hour?