There is no casting out of saved believers from His kingdom but there is a casting off for not being ready but still in His kingdom. Take for example the ten virgins that are the kingdom of heaven but five were foolish, having fallen away from the faith to be out to the market getting filled with oil ( the Holy Ghost ) when the wise knew they were filled since salvation for why they were ready to go with the Bridegroom in Matthew 25:1-13.
Although the five that were foolish were shut out for being in iniquity that denies Him for why He would deny knowing them, they are still part of the kingdom of Heaven for He will finish His work in those saints and even former believers left behind.
This warning to the church at Thyatira says otherwise.
Revelation 2:18 And unto the angel of the church in Thyatira write; These things saith the Son of God, who hath his eyes like unto a flame of fire, and his feet are like fine brass; 19 I know thy works, and charity, and service, and faith, and thy patience, and thy works; and the last to be more than the first. 20 Notwithstanding I have a few things against thee, because thou sufferest that woman Jezebel, which calleth herself a prophetess, to teach and to seduce my servants to commit fornication, and to eat things sacrificed unto idols. 21 And I gave her space to repent of her fornication; and she repented not. 22 Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds. 23 And I will kill her children with death; and all the churches shall know that I am he which searcheth the reins and hearts: and I will give unto every one of you according to your works. 24 But unto you I say, and unto the rest in Thyatira, as many as have not this doctrine, and which have not known the depths of Satan, as they speak; I will put upon you none other burden. 25 But that which ye have already hold fast till I come.
Those taken are to avoid what is coming on the earth; that calamity of fire that Peter exhorted believers to endure to the end for, in these latter days ( 2 Peter 3:3-18 ) as that fire will decimate one third of the earth ( Revelation 8:7-13 ) that sets up the new world order for the rest of the world and that mark of the beast system.
We the Bride will of course appear to be given rewards by Jesus after the Rapture.
Not only the reward of the crown can be lost but one can become a castaway from attending the Marriage Supper in Heaven.
1 Corinthians 9:24 Know ye not that they which run in a race run all, but one receiveth the prize? So run, that ye may obtain. 25 And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible. 26 I therefore so run, not as uncertainly; so fight I, not as one that beateth the air: 27 But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.
You had mentioned this below earlier in this same post and so clarification is needed but scripture has been provided to prove otherwise.
Care to explain?
8 We are confident, I say, and willing rather to be absent from the body, and to be present with the Lord. 9 Wherefore we labour, that, whether present or absent, we may be accepted of him. 10 For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad. 11 Knowing therefore the terror of the Lord, we persuade men; but we are made manifest unto God; and I trust also are made manifest in your consciences.
