I was referring to those who Jesus described on the last day, that came to Him saying Lord, Lord thinking they were saved only to find that they have been fooling themselves all along. We are also told to renew our commitment every day, by repenting of our sins and putting on the whole Armour of God. Only those who remain faithful to the end will be saved, so we don't know who will make it. Only God knows, we would probably be shocked if we knew who they were because none of the Disciples had a clue who the unbeliever was until Jesus told them that it was Judas. There may be people in our Church who look look like model Christians but they may not be saved.
I believe we can be quite certain in our salvation.
Rom 10:
9) That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10) For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
Of course, a person must actually DO that (^^^). But once he does:
1 John 3:
1) Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
2) Beloved,
now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
Rom 5:
9) Much more then, being now justified by his blood, we shall be saved from wrath through him.
Rom 8:
1) There is therefore now no condemnation to them which are in Christ Jesus ..
Eph 1:
13) In whom ye also
trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
14) Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.