So show teh verse or verses that say that these saved people who were not part of the church prior to Pentecost were suddenly added to teh bride of christ.
If that is the case who are the guests of the bride at the wedding feast? for these are saved people. and sorry but guest and bride are not interchangeable, unless you show a verse that either explicitly or strongly implies they may be interchangeable.
I don't know what you're trying to say here. I assume you are referring to Jesus's parable in Matthew 22:1-14? The guests are not guests of the bride, they are guests of the king. And do you understand that it's not talking about an actual bride and actual wedding? It's a parable relating to God's call to people to accept His offer of salvation. It's not meant to be compared exactly to an actual wedding where there obviously is just one person who is the bride while the guests are those who witness the wedding between the bride and the bridegroom. In the case of the parable the guests with wedding garments on represent the bride of Christ.
Matthew 22:1 And Jesus answered and spake unto them again by parables, and said, 2 The kingdom of heaven is like unto a certain king, which made a marriage for his son, 3 And sent forth his servants to call them that were bidden to the wedding: and they would not come. 4 Again, he sent forth other servants, saying, Tell them which are bidden, Behold, I have prepared my dinner: my oxen and my fatlings are killed, and all things are ready: come unto the marriage. 5 But they made light of it, and went their ways, one to his farm, another to his merchandise: 6 And the remnant took his servants, and entreated them spitefully, and slew them. 7 But when the king heard thereof, he was wroth: and he sent forth his armies, and destroyed those murderers, and burned up their city. 8 Then saith he to his servants,
The wedding is ready, but they which were bidden were not worthy. 9 Go ye therefore into the highways, and as many as ye shall find, bid to the marriage. 10 So those servants went out into the highways, and gathered together all as many as they found, both bad and good: and the wedding was furnished with guests. 11 And when the king came in to see the guests, he saw there a man which had not on a wedding garment: 12 And he saith unto him, Friend, how camest thou in hither not having a wedding garment? And he was speechless. 13 Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness, there shall be weeping and gnashing of teeth. 14 For
many are called, but few are chosen.
Who are those that are chosen? The guests who accept the wedding invitation and have their wedding garments on, right? Who do those people represent? Christians, right? Are Christians not part of the bride of Christ? Of course we are. So, can you see how your understanding of who the guests are is flawed? The guests with wedding garments on are part of the bride while any guests who don't have their wedding garments on are not part of the bride and are cast "into outer darkness" where "there shall be weeping and gnashing of teeth".