If you have time, take a look at the beginning of Romans 7 and the end of Romans 8.
For a married woman is bound by law to her husband while he lives, but if her husband dies she is released from the law of marriage.
Paul speaks to us of a relationship that would come to an end when a person dies. He uses the metaphor to explain to us under the Old Covenant, our relationship with the Law ends when we die.
He then goes on to say when Jesus died, he provided us the death to separate ourselves from that old covenant which is based on the Law to be joint with him.
What don’t often hear is this: Your Union with Jesus and how long it lasts.
Who shall bring any charge against God’s elect? It is God who justifies. Who is to condemn? Christ Jesus is the one who died—more than that, who was raised—who is at the right hand of God, who indeed is interceding for us.
Who shall separate us from the love of Christ? Shall tribulation, or distress, or persecution, or famine, or nakedness, or danger, or sword?
As it is written,
“For your sake we are being killed all the day long;
we are regarded as sheep to be slaughtered.”
No, in all these things we are more than conquerors through him who loved us.
For I am sure that neither death nor life, nor angels nor rulers, nor things present nor things to come, nor powers, nor height nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord.
Not even death can separate us from this relationship.
This Union you have is unlike the Law, it is inseparable.
Hence please note those who tell you that you can lose your salvation is correct provided you are under the old covenant. If you want to maintain your salvation by good deeds and observation of the Law of Moses, you will lose it.
If you know that you have died with Him, know that you also live with Him and are forever one with Him.
You also seem to forget. I think the words “anything else in creation” includes you.
There is nothing you can do that can sever your relationship with Jesus. It is a marriage that last beyond death.