More proof for eternal security:
John 6:37-40
All that the Father gives me will come to me, and whoever comes to me I will never cast out. For I have come down from heaven, not to do my own will but the will of him who sent me. And this is the will of him who sent me, that I should lose nothing of hall that he has given me, but raise it up on the last day. For this is the will of my Father, that everyone who looks on the Son and believes in him should have eternal life, and I will raise him up on the last day.”
I highlighted the yellow which proves that everyone that the Father has given to the Son WILL come (not maybe come, not free will, not walk away from it) and Jesus will NEVER cast them out (not maybe casts them out later).
I highlighted the blue which proves that those who have come to the Son, believed on him, will be raised up at the last day, and have eternal life. (Not maybe have eternal life)
Now I will tackle the conditional security argument that this leads to lawlessness and disobedience and just absolute wickedness:
2 Cor 5:17
Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come.
True Christians will never live as they please, because they are a NEW creation in Christ!