Can you lose your salvation? I'm convinced that you cannot. It could be possible that you never had it to begin with, but once Jesus has you in the clutch of his hands, and you've turned toward him, never to look back; you are safe. Can you lose your reward? Yes! That's why Jesus tells us, "hold fast to what you have so that no one may seize your crown" in Revelation 3:11. I'm not going to lie; some of the verses confused me, with some saying we need not worry, then others telling us to watch ourselves. The Bible doesn't contradict itself. Here is the truth about your salvation, and you should never forget it:
"I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father's hand." John 10:28-29
Jesus says it twice! There are no ifs, ands, or buts about what he says here. Remember, there is salvation and reward. Salvation is locked in place, free, and you cannot work for it. Rewards, on the other hand, can be worked for and lost. I would rather be the poorest person in heaven than the wealthiest person in hell. Remember, when you encounter a verse that makes you question whether you can lose your salvation, ask yourself this: is this about salvation or is it about rewards?
Salvation versus reward is like gardening. You dig, plant seeds, water, and fertilize; in return, you get a bountiful harvest. However, we had no part in creating the soil; that was a gift from God. The soil is like salvation, and the harvest is like the reward.