People are naturally fickle and often change their views rather quickly. This is true in spiritual matters just like it is in other areas. Many profess to be followers of Christ; yet with time they are proven to be phony followers. They like what Jesus might be able to do for them in this temporal world, but have no real desire to submit to his lordship forever. Several examples of this could be seen in Jesus' earthly ministry.
In the gospel of John we are told of Jesus feeding 5,000 by multiplying food miraculously. The people decided they wanted to take Jesus by force and make him their king. You might think that sounds good; but their motivation was really selfish. They didn't love Jesus, they simply loved the fact that he gave them free food. Jesus told them, “Truly, truly, I say to you, you seek Me, not because you saw signs, but because you ate of the loaves and were filled.” (John 6:27 NASB) Had he not provided the food, they would have never sought him as king. What they experienced was not true Christianity.
Of course the most glaring example of such hypocrisy can be seen in the last week of Jesus' life on earth. On Palm Sunday, he rode into Jerusalem with the crowds praising him shouting, “Hosanna to the Son of David!” But by the end of the week, the crowds were shouting, “Crucify him! Crucify him!” And even his own disciples fled for their own safety.
What is your personal stance toward Jesus? Are you merely interested in what he might do for you in this life? Or do you wish to be his follower forever? Do you merely want to go to Heaven so you can avoid Hell? Or do you want to go to Heaven because you want to be with Jesus? Do you daily “bow the knee” to Jesus as Lord and King? Or are you simply trusting in some kind of one time “moment” when you thought you were saved? True, genuine, saving faith in Christ doesn't fall away when things get hard. True believers continue on. They follow Christ as their Chief Shepherd. Trust in him today and every day. Shout “Hosanna!” and let the phonies of the world shout “Crucify Him!”