Read Acts 1 about Jesus spending 40 days before his ascension speaking of things pertaining to the the kingdom of God. And when they all assembled together, they all asked the same question: "Wilt thou at this time restore the KINGDOM TO ISRAEL?" And Jesus's answer was that the time when that will happen is in the Father's hands not His. He did not rebuke them for asking a dumb question. He said it is not for now but for some time later and he gave the apostles a job to do in the meantime.
Read again that third verse you quoted. That is what is happening now or will shortly happen. He is sitting at his right hand until the Father makes his enemies his footstool.
Acts 15:14-17 is perfectly clear. After God visits the nations to take out of them a people for his name [the church], He will return and build the tabernacle of David which is fallen down so that the residue of men might seek after the Lord . . . ".
Replacement Theology is wood, hay and stubble. Why don't you read the prophets. They will tell you, particularly Zechariah.
1Th 2:12 that you should walk worthy of God, who has called you to His kingdom and glory.