Your Eternal Security..

Hebrews 7:25
He is also able to save to the uttermost those who come to God through Him, since He ever lives to make intercession for them.(He is Jesus)

Perhaps the most miserable people on earth are those who have trusted in Christ as Savior but battle harassing doubts concerning the assurance of their eternal security.
If you find yourself swinging in and out of a sense of eternal security, you can walk on the level, unchanging ground of God's truth. The ride of swaying doubt can end today. Here's why: You were saved by Christ's performance on the cross, where all your sins__past, present, and future___were forgiven. Your eternal security is grounded in the person and work of Christ, not your performance.
Feelings fluctuate, especially when we sin. But nothing can cancel the reservation that Christ has made in heaven for believers, since it was purchased once and for all by His sacrificial death.
Once you are saved, Christ takes up permanent residence in your life. He will never leave you, even if your track record as a saint is spotty. He may discipline you, and the consequences for your sin may not be pleasant. But your eternal security is not altered.
God's love for you is unconditional, unfailing, and unchanging. He has made you His child forever, and absolutely nothing can change your identity as God's son or daughter. (Charles Stanley)