No our salvation is not up to us, we do not have any means of ourselves to obtain salvation. But the warnings in Scripture are very real and of course we have to take Christ's warning seriously to "hold fast."
Rev 3:11 Behold, I am coming quickly! Hold fast what you have, that no one may take your crown.
Rick, there is the parable of the Sower and the seed that I think Christ lays it out just how there are those who are among the chosen believers, at least for awhile, but do not endure to the end
Luke 8:11 "Now the parable is this: The seed is the word of God.
v. 12 Those by the wayside are the ones who hear; then the devil comes and takes away the word out of their hearts, lest they should believe and be saved.
v. 13 But the ones on the rock are those who, when they hear, receive the word with joy; and these have no root, who believe for a while and in time of temptation fall away.
v. 14 Now the ones that fell among thorns are those who, when they have heard, go out and are choked with cares, riches, and pleasures of life, and bring no fruit to maturity.
v. 15 But the ones that fell on the good ground are those who, having heard the word with a noble and good heart, keep it and bear fruit with patience.
You see that these all listen/hear this truth, but none of these over time can endure (impossible without the Spirit), so for one reason or the other they depart or just drift away. There is another parable that carries this idea even further, the Wheat and the tares. So there are some that seem to endure to the end, but it turns out they were never chosen at all.
Mat 13:24 Another parable He put forth to them, saying: "The kingdom of heaven is like a man who sowed good seed in his field;
v. 25 but while men slept, his enemy came and sowed tares among the wheat and went his way.
v. 26 But when the grain had sprouted and produced a crop, then the tares also appeared.
v. 27 So the servants of the owner came and said to him, 'Sir, did you not sow good seed in your field? How then does it have tares?'
v. 28 He said to them, 'An enemy has done this.' The servants said to him, 'Do you want us then to go and gather them up?'
v. 29 But he said, 'No, lest while you gather up the tares you also uproot the wheat with them.
v. 30 Let both grow together until the harvest, and at the time of harvest I will say to the reapers, "First gather together the tares and bind them in bundles to burn them, but gather the wheat into my barn." ' "
mercy, peace and love
Kat