The succinct precise grammar in the infallible Greek is perfectly clear: a matter of WHEN not IF....So they had free will the first time and did not accept Christ but the second time they will, how convenient for the dispensationalist system. lol
The short answer is yes. From a linguistic standpoint, the Greek construction of the disciples' question and Jesus' subsequent answer strongly implies that the restoration of the kingdom is a certainty, even if the timing was withheld.
The precision of the Greek in Acts 1:6–7 provides three key grammatical markers that support the literal restoration of the nation:
1. The Verb Apokathistanis (Restore)
The disciples use the word ἀποκαθιστάνεις (apokathistaneis).
The Meaning: This is a compound of apo (back again) and kathistēmi (to set in order). In classical and Septuagint Greek, it specifically refers to reconstitution or returning something to its original, rightful state.
The Implication: You cannot "restore" something that never existed. By using this word, the disciples are referring to the specific, national, Davidic kingdom of the Old Testament. If Jesus intended to replace Israel with a "spiritual church," this would be a "replacement" or "new creation," not a restoration.
2. The Use of "Israel" (tō Israēl)
The disciples specify the beneficiary of this restoration: τῷ Ἰσραήλ (tō Israēl).
The Specificity: In the New Testament, when "Israel" is used without qualification in a historical or political context, it refers to the ethnic/national progeny of Jacob.
Jesus’ Non-Correction: Most tellingly, Jesus does not correct their terminology. He does not say, "You misunderstand; there is no kingdom for Israel." Instead, He addresses the chronology ("It is not for you to know times or seasons"). In logic, to dispute the timing of an event is to concede the reality of the event itself.
3. The Noun Chronos vs. Kairos (Times and Seasons)
In verse 7, Jesus says it is not for them to know the χρόνους (chronous) or καιρούς (kairous).
The Distinction: Chronos refers to chronological time (minutes, days, years), while kairos refers to "epochal" time or "the right moment."
The Fulfillment: By saying these times are "fixed by the Father's own authority," Jesus affirms that the "restoration" is a scheduled event on the Father’s calendar. If the restoration were never going to happen, there would be no "time or season" to keep secret.