At the moment of salvation, you are a new creation, baptized with the Holy Spirit and made eternally secure, in union with Christ forever.

Jesus says:

“I give [you] eternal life, and [you] shall never perish; neither shall anyone snatch [you] out of My hand.” (John 10:28, NKJV)

There is absolutely nothing anyone can do to sever your eternal relationship with Christ.

"For I am convinced that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, nor height, nor depth, nor any other created thing, will be able to separate us from the love of God, which is in Christ Jesus our Lord." (Romans 8:38-39, NASB)

There is absolutely nothing you can do to lose your eternal salvation . . . not even sin! There is no sin that can cancel the work Christ already accomplished on the cross.

"For He [God] made Him [Jesus Christ] who knew no sin to be sin for us, that we might become the [perfect] righteousness of God in Him." (2 Corinthians 5:21, NKJV, emphasis added)
 
"who Himself bore our sins in His own body on the tree [Cross], that we, having died to sins, might live for [perfect] righteousness—by whose stripes [wounds] you were healed." (1 Peter 2:24, NKJV, emphasis added)
 
"In Him we [are having] redemption through His blood, the forgiveness of sins, according to the riches of His grace" (Ephesians 1:7, NKJV, corrected Greek translation)
 
"having wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross." (Colossians 2:14, NKJV)

For if we keep on walking according to the control of the Spirit, we will not be under the control of the flesh.

"I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh." (Galatians 5:16, NKJV)
 
"Therefore there is now no [eternal] condemnation for those who are in Christ Jesus." (Romans 8:1, NASB, corrected translation)
 
"For the law of the Spirit of life in Christ Jesus has made me free from the law of sin and death." (Romans 8:2, NKJV)
 
"For what the [Mosaic] law could not do in that it was weak through the flesh, God did by sending His own Son in the likeness of sinful flesh, on account of sin: He condemned sin in the flesh," (Romans 8:3, NKJV, emphasis added)
 
"that the righteous requirement of the [Mosaic] law might be fulfilled in us who do not walk according to the [desire of the] flesh but according to the [desire of the] Spirit." (Romans 8:4, NKJV, emphasis added)

"For those who live according to the [desire of the] flesh set their minds on the things of the flesh, but those who live according to the [desire of the] Spirit, the things of the Spirit." (Romans 8:5, NKJV, emphasis added)
 
"For to be carnally minded [out of temporal fellowship with God] is death, but to be spiritually minded [in temporal fellowship with God] is life and peace." (Romans 8:6, NKJV, emphasis added)
 
"Because the carnal [human viewpoint] mind is enmity against [hatred toward] God; for it is not subject to [does not obey] the law of God [the desire of the Spirit], nor indeed can be." (Romans 8:7, NKJV, corrected translation)
 
"So then, those who are in the flesh [carnally minded, under the control of the sin nature] cannot please God." (Romans 8:8, NKJV, corrected translation)
 
"But you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you [and He is, in fact, presently and permanently in you if indeed you have expressed faith alone in Christ alone]. Now if anyone does not have the Spirit of Christ, he is not His [he has not yet expressed faith alone in Christ alone and, therefore, is not yet a part of the royal family of God, the Body of Christ]." (Romans 8:9, NKJV, emphasis added)
 
"And if Christ is in you, the body is dead because of sin, but the Spirit is life because of righteousness." (Romans 8:10, NKJV)
 
"But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ from the dead will also give life to your mortal bodies through His Spirit who dwells in you." (Romans 8:11, NKJV)
 
"I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me." (Galatians 2:20, NKJV)
 
"For we walk by faith, not by sight." (2 Corinthians 5:7, NKJV)
 

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