He will sustain you to the end, so that you will be blameless on the day of our Lord Jesus Christ. — 1 Corinthians 1:8

On the last day, Christ will present you blameless — not because you kept yourself clean, but because he keeps his own. You were once God's enemy, but he reconciled you through Christ's death to present you holy and blameless before him. He's able to keep you from stumbling and present you faultless before his glory with great joy. That's not presumption — that's faith in a faithful God. So be diligent to be found in peace, without spot or blemish, resting in the one who holds you.