A Person must persevere in faith to be saved, which through the working of the Holy Spirit, God does Himself. True believers cannot lose their faith, since its God’s gift. God will preserve true believers and they will be saved. Here is scriptural proof to the topic at hand. Many more scriptures can be used but this should be sufficient. To say that a true believer in Christ Jesus can lose the gift of salvation would be calling God Himself a liar and would allow each person to boast. Ephesians 2:8 for by grace you have been saved through faith, and that not of yourselves; it is the gift of God, 9 not of works, lest anyone should boast.
Salvation is Eternal and before the foundation of the earth:
“Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, 4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, 5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, by which He made us accepted in the Beloved.”
Hebrews 10:14 “For by one offering He has perfected forever those who are being sanctified.”
2 Timothy 1:9 “who has saved us and called us with a holy calling, not according to our works, but according to His own purpose and grace which was given to us in Christ Jesus before time began..”
Titus 1: “Paul, a bondservant of God and an apostle of Jesus Christ, according to the faith of God’s elect and the acknowledgment of the truth which accords with godliness, 2 in hope of eternal life which God, who cannot lie, promised before time began”
1 John 2:25 “And this is the promise that He has promised us—eternal life.”
More Scriptures that God gave us eternal life: 1 John 5:10-11, John 10:27-28, Romans 6:23, 1 John 5:13, “John 10:27 My sheep hear My voice, and I know them, and they follow Me. 28 And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand.”
Promise of being sealed: 2 Corinthians 1: 21” Now He who establishes us with you in Christ and has anointed us is God, 22 who also has sealed us and given us the Spirit in our hearts as a guarantee.”
Ephesians 1:13 “In Him you also trusted, after you heard the word of truth, the gospel of your salvation; in whom also, having believed, you were sealed with the Holy Spirit of promise”
Ephesians 4:30 “And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.”
Imputed Promise’s from God:
Roman 4:11 “And he received the sign of circumcision, a seal of the righteousness of the faith which he had while still uncircumcised, that he might be the father of all those who believe, though they are uncircumcised, that righteousness might be imputed to them also”
Romans 4:22 “And therefore “it was accounted to him for righteousness.”23 Now it was not written for his sake alone that it was imputed to him, 24 but also for us. It shall be imputed to us who believe in Him who raised up Jesus our Lord from the dead”
Psalms 32:2 “Blessed is the man to whom the LORD does not impute iniquity..”
Romans 4:8 “Blessed is the man to whom the LORD shall not impute sin.”
Romans 4:5-6 “But to him who does not work but believes on Him who justifies the ungodly, his faith is accounted for righteousness, 6 just as David also describes the blessedness of the man to whom God imputes righteousness apart from works:”
It takes 100% righteousness to enter into heaven, as humans we will NEVER be able to work or earn 100 % righteousness. There is only one way to achieve this! When we accept the free gift of salvation, Jesus himself places a white rode of His 100% righteousness on us, Jesus then takes 100% of our unrighteousness (sins) and places them on Himself. 100% in God’s eyes in past, present and future sins! Then God makes us more promises! He seals us with His Holy Spirit and promise never to IMPUTE sin upon us again! The word imputes means to “charge to ones account”.
It is because of what God has done for us we are saved, NOT WHAT WE DO FOR GOD! The LORD Jesus has paid our debt of sin in full. The debt is covered; it is entirely wiped clean.
God Keeps a true Born Again Believer, so as not to lose your salvation:
The assurance of the believer is not that God will save him even if he stops believing, but that God will keep him believing – God will sustain you in faith, he will make your hope firm and stable to the end. He will cause you to persevere.
John 6:37 “that the Father gives me will come to me, and the one who comes to me I will by no means cast out.”
2 Timothy 1:12 “For this reason I also suffer these things; nevertheless I am not ashamed, for I know whom I have believed and am persuaded that He is able to keep what I have committed to Him until that Day.”
1 Peter 1:3 “Blessed be the God and Father of our Lord Jesus Christ, who according to His abundant mercy has begotten us again to a living hope through the resurrection of Jesus Christ from the dead, 4 to an inheritance incorruptible and undefiled and that does not fade away, reserved in heaven for you, 5 who are kept by the power of God through faith for salvation ready to be revealed in the last time.”
Romans 8:35-39 “35 who will separate us from the love of Christ? Will tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword? 36 Just as it is written, “FOR Your sake we are being put to death all day long; We were considered as sheep to be Slaughtered.” 37 But in all these things we overwhelmingly conquer through Him who loved us. 38 For I am convinced that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, 39 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.
And lastly if we say that we can lose our salvation then the prayer’s which Jesus prayed for us would be null and void, in John 11, John 17, Luke 22:31-32.
“Our perseverance is a gift from God. In our salvation, God blesses us with assurance through His gift of perseverance (2 Thessalonians 3:5). However, many Christians lack full assurance of their salvation because their understanding of assurance is founded on the constantly changing emotions of their hearts rather than on the eternal Word of God.” ~ Burk Parsons
“It is true that God will never forsake His own children. But the proof that we are His children is that He works in us the vigilance not to forsake Him. God's not forsaking us is the work He does in us to keep us from forsaking Him (Philippians 2:12-13).” ~ John Piper