I believe that it’s important to not make a parable say more than it is meant to say. The parable of the sower is a metaphor that explains different ways we react to the word of God, depending on the condition of our hearts. It is not a statement concerning one’s ultimate salvation, but concerning how any of us can potentially embrace or reject the Word at any given point in time concerning any topic. For example, have you ever lost your peace, joy, love, and self control because of being worried about something? I have even though I’m saved. Or have you ever heard scripture that is contrary to your traditions, and quickly disregard the passage because you were not willing to consider that your traditions might be errant. I have. Thankfully though, many times though later I came to realize that my traditions were in error. Or have you ever reacted to someone in a completely inoppropriate harsh way because they touched a topic or area where you had been hurt before, where you were sensitive? I have.
Anyhow, like I said, it’s important to not make a parable say more than it is meant to say. Jesus is talking about our everyday response to the Word of God, not about whether a person is ultimately saved or not. And it’s significant to note that the passage highlights that it is God that chooses whether or not to open a person’s mind and heart to recieve the Word!
Mt.13: 10 The disciples came to him and asked, “Why do you speak to the people in parables?” 11 He replied, “Because the knowledge of the secrets of the kingdom of heaven has been given to you, but not to them. 12 Whoever has will be given more, and they will have an abundance. Whoever does not have, even what they have will be taken from them.
And, btw, there is much more to the Kingdom of God than just salvation! For example, for many years because of my traditions I would only skim over and quickly disregard scripture concerning spiritual gifts, thinking such was not for today. But one day the Lord opened my eyes to the possibility that I had been taught error and that such manifestations of the Spirit were for today, for even me. Long story short: I ended up recieving the word and have since then lived in that aspect of the Kingdom of God and seen and experienced manifestations of the Spirit like prophecy, words of knowledge and wisdom, healings, miracles, tongues and interpretation of tongues, etc.