When we become Christians this is what takes place. Therefore, if anyone is in Christ, he is a NEW CREATION; the old has gone, the new has come! 2 Corinthians 5:17. This is the work of God it has NOTHING to do with us it's a transformation started on the inside that manifests on the outside over time. When we are created in the womb by the process that takes place between our natural parents we take no role in that process. We would never say I can undue my own creation process in the womb. Why would we think we could undue God's creation process? Remember we are born again. God makes it clear. Hebrews 7:25 Therefore he is able to SAVE COMPLETELY those who come to God through him, because he always lives to intercede for them. The believer need never fear he will lose his salvation. He cannot. The Bible is absolutely clear about that. Jesus said, “My sheep hear my voice, and I know them, and they follow me; and I give ETERNAL not semi eternal life to them, and they shall NEVER perish; and no one shall 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 10:27-29; see also Rom. 8:35-39; Phil. 1:6; and 1 Pet. 1:4-5).