Your question is about English on the confusion of maybe vs may be.
To quote from an answer, from English Language Learners:
Grammatically, “maybe” is an adverb, while “be” is a verb, here used with “may” as an auxiliary verb. The word “perhaps” is another adverb with a meaning very similar to “maybe,” while “might” can be used as an auxiliary verb with much the same meaning as “may.” But “mightbe” is not a word, and “be” is almost never used without an auxiliary verb so “perhaps be” still needs one.
The suggestion of swapping “may be” with “is” (or another form of the verb “to be”)[to check whether you need maybe or may be in your sentence] is also quite good: it changes the meaning, but has the same grammatical role, so if “is” works grammatically, then “may be” will also work grammatically. (from KRyan)
May, should, would, could, ought, can are modal verbs. There are other expressions that contain modal meaning as well. They are used with the main verb be or abide. Together they are a verb phrase: "May be", whereas may be are separate words. John 14:16 KJV: he may abide with you; ESV: to be with you; SLT: should remain with you. It is not related with probability, only maybe the adverb means perhaps, shows uncertainty.
Subjunctive means possible, contingent, or hypothetical; not a fact. The context will determine whether the sense is of possibility, or contingency. Therefore do not be anxious, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’ (Matt 6:31) shows possibility, uncertainty of future.
General Definition of Subjunctive, by Daniel Wallace:
The subjunctive is the most common of the oblique moods in the NT. In general, the subjunctive can be said to represent the verbal action (or state) as uncertain but probable. It is not correct to call this the mood of uncertainty because the optative also presents the verb as uncertain. Rather, it is better to call it the mood of probability so as to distinguish it from the optative. Still, this is an overly simplistic definition in light of its usage in the NT.
The single most common category of the subjunctive in the NT is after hina ἴνα, comprising about one third of all subjunctive instances. There are seven basic uses included in this construction: purpose, result, purpose-result, substantival, epexegetical, complementary, and command. Its usage in the Koine period has increased from the classical as this construction came to be used as a periphrasis for the simple infinitive.
Optative, from Latin opto means I wish. It simply shows wish, prayer, blessing or curse. Just as the indicative is the mood of “reality” and the subjunctive the mood of “potential,” the optative is the mood of “wish.” This fits better with certainty, we hope that he dies, we hope he is surely blessed, etc.
The certainty of the condition is based upon believer's fulfilling the condition to be saved. They shall never perish ἀπόλωνται John 10:28. In the promise of the Holy Spirit, that it will/should/would abide with you forever. You should only see it in the sense of potential & contingent, and not certain/uncertain, for certainty pertains to the degree of psychological surety or doubt. The promise of God is assured, but only its fulfilment is contingent and conditional on man's part. Or, I should say, the certainty of the subjunctive is dependent upon the conditions or terms given in the clause, not independently uncertain.
May be
In the phrase may be /meɪ bi:/ may is a modal verb and be is a main or
auxiliary verb. Here may and be are two separate words, whereas maybe
is one word:
-There may be a train at 10.00am.
-Not: There maybe a train at 10.00am.
-He may be waiting for us.
Typical error
We use may as a modal verb in the phrase may be. They are two
separate words. We use maybe as an adverb:
Maybe /ˈmeɪbi/ is an adverb and it means the same as perhaps. It is
written as one word:
