Since my thrice-Holy, sovereign God committed to bring glory to Himself by redeeming sinful men and women, it makes logical sense that He will never allow the redeemed to be "unredeemed". Since God committed to saving me before the foundation of the world, it is logical, for the display of His own glory, that He will remain true and not let me go. Since God demonstrated His commitment to save me by the work of Christ on the Cross, He would not discredit that perfect work by allowing or causing me to fall away from His grace.
There is no greater encouragement to obey God's Word than His promise to never leave us or forsake us. Jude's beautiful doxological statement to end his epistle captures the essence of the matter-
Jude 1:24-25 Now to him who is able to keep you from stumbling and to present you blameless before the presence of his glory with great joy, to the only God, our Savior, through Jesus Christ our Lord, be glory, majesty, dominion, and authority, before all time and now and forever. Amen.
It takes great ability to make the heavens and the earth.
It takes great ability to create all the fish of the sea, birds of the air, plants of the earth, and the creeping things.
It takes great ability to create man in His image.
It takes great ability to be patient with Man in all His rebellion.
It takes great ability to bring forth a nation in order to bring forth a Savior who will redeem His people.
It takes great ability in all the events that took place in forming that nation- miracles of physical redemption, miracles of personal intervention, great act after great act.
It takes great ability to send His only begotten Son to die for us.
It takes great ability to raise Him again on the Third day.
All the various acts of God reveal a glorious and great God who is able to do all these things- but let me tell you what ability impresses me most personally- it is the ability of God the Father to take a lying, gluttonous, idolatrous, arrogant, prideful, lustful, wicked, rebellious, sinner like me and present me on the great and glorious day of the Lord Jesus’ appearing as one who is BLAMELESS. Yes! Me! He will present me blameless. I will be able to stand in my Father’s presence without doubt, without fear, without shame for all my many sins! All because of Christ's death for me! I’m impressed by God’s manifold abilities as expressed in creation and redemption, but nothing strikes me more personally than His ability to present me blameless in front of Him and all the heavenly hosts!
I look forward to Easter Sunday, but for now, on "Good" Friday, I will continue to reflect on the glory and grace of Christ's work on the cross for me.