The Bible teaches us that we should not judge a person’s salvation, because we can not see a person’s heart. Only God can do that.
But, it does teach us about those that may be questionable or not understanding.
There are the young in the Lord, immature and unsteady and fleshy, that have not learned the deeper meaning of the truth, there are those who get to a certain point in their learning and then they stop growing because they allow the things of the world to get in their way and finally, there are those who are false and are not of God at all.
Those who are infants will grow in their own time when they are given love and encouragement. Those who are more mature are responsible for helping them grow and not causing them to stumble. Jesus even said, “Whoever causes one of these little ones who believe in Me to stumble, it would be better for him to have a heavy millstone hung around his neck, and to be drowned in the depth of the sea.” (Matthew 18:6, Mark 9:42, Luke 17:2)
One type of person who creates stumbling blocks is the one who believes he has a full understanding of the word of God, but they are yet still immature. They cause some, at least for a moment, to stumble because they force their understanding and have no desire to learn the deeper truth.
These people stop growing and maturing for a variety of reasons – pride, self-centeredness, being false, hypocrisy and greed, just to name a few.
Paul wrote to the church in Corinth a couple of times about their spiritual growth.
And I, brethren, could not speak to you as to spiritual men, but as to men of flesh, as to infants in Christ. 1 Corinthians 3:1
I gave you milk to drink, not solid food; for you were not yet able to receive it. Indeed, even now you are not yet able, for you are still fleshly. For since there is jealousy and strife among you, are you not fleshly, and are you not walking like mere men? 1 Corinthians 13:2-3
Paul knew that they would not understand the deeper word of God because the people could not get past the things of the world. They let money matters, adultery, jealousy, and conflicts take their focus off God.
He even had to tell them a second time because they could not get past the things of the world. Many of them were not walking in the Spirit, but in the flesh and unless they could move past that, they would never truly grasp the deeper meaning, the meat, of the word of God.
One other that the Bible teaches us about, that can cause a person to stumble, are the false prophets and false disciples. These are the ones that can cause a huge stumbling block for the immature. These are the ones who lie, deceive and twist the word of God for a purpose other than serving the Lord. They are the ones who pretend to be good, when in their heart they are not.
False prophets and teachers are specifically warned about because they appear to be good. It is important that we learn to recognize these people and not listen to what they say.
We can not judge a person’s salvation, but the Bible does teach us to test the spirits (1 John 4:1). We need to learn to know truth from untruth.
We are not to just believe every person that just walks up and says, “I am saved”.
By this you know the Spirit of God; every spirit that confesses that Jesus Christ has come in the flesh is from God; and every spirit that does not confess Jesus is not from God; this is the spirit of the antichrist, of which you have heard that it is coming, and now it is already in the world. 1 John 4:2-3
It is not the intellectual belief that is being talked about here, but the true, from the heart confession of ones faith. What you must understand is that demons recognize Jesus. They know who He is.
Just then there was a man in their synagogue with an unclean spirit; and he cried out, saying, “What business do we have with each other, Jesus of Nazareth? Have You come to destroy us? I know who You are – the Holy One of God!” and Jesus rebuked him saying, “Be quiet, and come out of him!” Mark 1:23-25
Demons know who He is, they know He is of God. But you will never hear one acknowledge the sacrifice He made. If you are ever in doubt, it is important to ask.
Jesus teaches us that it is not what we take in that defiles us, it is what comes out from us that defiles us, because what comes out of our mouth, comes from our heart.
So go test the spirits. Ask a person who is Jesus to them. See if they not only recognize him as the son of God, but that He was born in the flesh, crucified and raised again so that they may have eternal life. Jesus is our Lord, our savior, our salvation, our true life blood.
Help those who are pride filled and immature to see the truth. Pray that their pride and worldly concerns be gone and that they turn and serve the Lord in truth. And encourage and support those who are immature so that if a stumbling block comes, they have someone they can trust to turn to.