Here is Bible sanctification. It is not merely a show or outside work. It is sanctification received through the channel of truth. It is truth received in the heart and practically carried out in the life.
Jesus, considered as a man, was perfect, yet He grew in grace. Luke 2:52: "And Jesus increased in wisdom and stature, and in favour with God and man." Even the most perfect Christian may increase continually in the knowledge and love of God. . . .
"But grow in grace, and in the knowledge of our Lord and Saviour Jesus Christ. To Him be glory both now and forever. Amen."
Sanctification is not the work of a moment, an hour, or a day. It is a continual growth in grace. We know not one day how strong will be our conflict the next. Satan lives, and is active, and every day we need to cry earnestly to God for help and strength to resist him. As long as Satan reigns we shall have self to subdue, besetments to overcome, and there is no stopping place, there is no point to which we can come and say we have fully attained....
The Christian life is constantly an onward march. Jesus sits as a refiner and purifier of His people; and when His image is perfectly reflected in them, they are perfect and holy, and prepared for translation.
Every living Christian will advance daily in the divine life. As he advances toward perfection, he experiences a conversion to God every day; and this conversion is not completed until he attains to perfection of Christian character, a full preparation for the finishing touch of immortality. ML 249
When the character of Christ shall be perfectly reproduced in His people, then He will come to claim them as His own. It is the privilege of every Christian, not only to look for, but to hasten the coming of our Lord Jesus Christ. COL 69
Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the word, That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish. Ephesians 5:25-27 (King James Version)