Uncleanness, or the defilement of this world, can be transferred from one person to another, but holiness cannot. Likewise, righteousness, character, and preparedness for God's Kingdom cannot be transferred from person to person because they represent internal qualities, matters of the heart.
Holy character and righteousness are personal matters, intangibles that accrue from spending long periods of time learning, applying, and honing spiritual skills in the daily experiences of life. It is too late when one needs a skill immediately, and it is not there. The same is true of character: It cannot be borrowed. Perhaps more importantly, we cannot borrow a relationship with God.
This ought to teach us that opportunity knocks and then passes. In the Parable of the Ten Virgins (Matthew 25:1-13), the foolish virgins fail to anticipate the possibility that the Bridegroom might come later than they expect. When they are awakened, there is no time to do anything except fill their own lamps. This proves that nobody can deliver his brother. Each person, within his relationship with God, determines his own destiny.
The Laodicean's faith, however, has become perfunctory. He attends church and is involved with brethren socially, but privately, he merely goes through the motions in much the same way as the Israelites did in Amos' day. Absent is the fervency that develops through careful analysis and evaluation of the world and its corrupt promises against God and His holy promises.
God shows that the unprepared will not be admitted to His Kingdom. We should not construe this as a calloused rejection of a person's perhaps lifelong desire, but we should realize that the Laodicean has rejected the Kingdom of God on a daily basis over a long time! God is not unfair in His judgment. He gives the Laodicean what he showed he wanted. God reciprocates in kind.
Perhaps we can understand God's judgment if we imagine what ours would be if we were engaged to someone who never prepares for our upcoming marriage. What person would want a wife or a husband who had no enthusiasm for the marriage? Or perhaps we can compare it to a person who meets someone who would make a wonderful mate, but despite having ample opportunity and mutual admiration, the relationship never develops due to the other's being constantly distracted.