You're off base - Acts 3 is referring to that day when the Lord returns not only to deliver Israel from their enemies as a nation, but ALSO; to blot out their CORPORATE sin (their sin - as A Nation - the ONLY Nation in all of history ever directly under God - was why they were under their enemies reign to begin with, see Daniel 9's prayer).
Luke 1:70 As he spake by the mouth of his holy prophets, which have been since the world began: 1:71 That we should be saved from our enemies, and from the hand of all that hate us; 1:72 To perform the mercy promised to our fathers, and to remember his holy covenant; 1:73 The oath which he sware to our father Abraham, 1:74 That he would grant unto us, that we being delivered out of the hand of our enemies might serve him without fear, 1:75 In holiness and righteousness before him, all the days of our life. 1:77 To give knowledge of salvation unto his people by the remission of their sins, 1:78 Through the tender mercy of our God; whereby the dayspring from on high hath visited us, 1:79 To give light to them that sit in darkness and in the shadow of death, to guide our feet into the way of peace.
Luke 24:19 And he said unto them, What things? And they said unto him, Concerning Jesus of Nazareth, which was a prophet mighty in deed and word before God and all the people: 24:20 And how the chief priests and our rulers delivered him to be condemned to death, and have crucified him. 24:21 But we trusted that it had been he which should have redeemed Israel: and beside all this, to day is the third day since these things were done. 24:25 Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken: 24:26 Ought not Christ to have suffered these things, and to enter into his glory? 24:27 And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself.
Luke 21:24 And they shall fall by the edge of the sword, and shall be led away captive into all nations: and Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled. 21:25 And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; 21:26 Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken. 21:27 And then shall they see the Son of man coming in a cloud with power and great glory. 21:28 And when these things begin to come to pass, then look up, and lift up your heads; for your redemption draweth nigh.
Acts 3:13 The God of Abraham, and of Isaac, and of Jacob, the God of our fathers, hath glorified his Son Jesus; whom ye delivered up, and denied him in the presence of Pilate, when he was determined to let him go. 3:14 But ye denied the Holy One and the Just, and desired a murderer to be granted unto you; 3:15 And killed the Prince of life, whom God hath raised from the dead; whereof we are witnesses. 3:16 And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all. 3:17 And now, brethren, I wot that through ignorance ye did it, as did also your rulers. 3:18 But those things, which God before had shewed by the mouth of all his prophets, that Christ should suffer, he hath so fulfilled. 3:19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord; 3:20 And he shall send Jesus Christ, which before was preached unto you: 3:21 Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began. 3:22 For Moses truly said unto the fathers, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear in all things whatsoever he shall say unto you. 3:23 And it shall come to pass, that every soul, which will not hear that prophet, shall be destroyed from among the people. 3:24 Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days. 3:25 Ye are the children of the prophets, and of the covenant which God made with our fathers, saying unto Abraham, And in thy seed shall all the kindreds of the earth be blessed. 3:26 Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
The Body of Christ had not yet even begun.