Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ… – Ephesians 1:3
We have been greatly saddened as we have seen some high professors turning from their profession—ay, and worse still, some of the Lord’s own beloved committing grievous faults and slips, which have brought disgrace upon their character, and injury to their souls. Now I have learned to look to heaven lately as a place where we shall never, never sin—where our feet shall be fixed firmly upon a rock—where there is neither tripping nor sliding—where faults shall be unknown—where we shall have no need to keep watch against an indefatigable enemy, because there is no foe that shall annoy us—where we shall not be on our guard day and night watching against the incursion of foes, for there “the wicked cease from troubling and the weary are at rest.” I have looked upon it as the land of complete security, where the garment shall be always white, where the face shall be always anointed with fresh oil, where there is no fear of slipping or turning away, but where we shall stand fast for ever. And I ask you, if that is a true view of heaven—and I am sure it is one feature of it—do not the saints even on earth enjoy some fruits of Paradise, even in this sense? Do we not even in these huts and villages below sometimes taste the joys of blissful security? The doctrine of God’s Word is, that all who are in union with the Lamb are safe, that all believers must hold on to their way, that those who have committed their souls to the keeping of Christ shall find Him a faithful and immutable keeper. On such a doctrine we can enjoy security even on earth; not that high and glorious security which renders us free from every slip and trip, but nevertheless a security well nigh as great, because it secures us against ultimate ruin, and renders us certain that we shall attain to eternal felicity. ~ C.H. Spurgeon
https://www.blueletterbible.org/comm/spurgeon_charles/sermons/0989.cfm