1D There is no one who, according to his natural, human life, is steadfast in his heart; because our heart changes so easily, it is not at all trustworthy— Jer. 17:9-10; 13:23.
3F In God's salvation the renewing of the heart is once for all; however, in our experience our heart is renewed continually because it is changeable—Ezek. 36:26; 2 Cor. 4:16.
4G Because our heart is changeable, it needs to be renewed continually by the sanctifying Spirit so that our heart can be established and built up in the state of being holy, separated unto God, occupied by God, possessed by God, and saturated with God—Titus 3:5; Rom. 6:19, 22; 2 Cor. 3:16-18; Matt. 5:8; Psa. 51:10-12.
5H As our heart is being established blameless in holiness by the continual renewing of the sanctifying Spirit, we are becoming the New Jerusalem with the newness of the divine life, and we are becoming the holy city with the holiness of the divine nature—Rev. 21:2; 1 John 5:11-12; 2 Pet. 1:4.
6Ⅵ "The God of peace Himself sanctify you wholly, and may your spirit and soul and body be preserved complete, without blame, at the coming of our Lord Jesus Christ. Faithful is He who calls you, who also will do it"—1 Thes. 5:23-24:
7A The God of peace is the Sanctifier; His sanctification brings in peace; when we are wholly sanctified by Him from within, we have peace with Him and with man in every way—vv. 23, 13; 2 Thes. 3:16.
8B God desires to sanctify us, and He Himself will do it as long as we are willing to pursue Him as holiness and cooperate with Him; in this way we can be holy as He is holy (1 Pet. 1:15-16); without holiness we cannot see Him (Heb. 12:14).
9C By sanctifying us, God transforms us in the essence of our spirit, soul, and body, making us wholly like Him in nature; in this way He preserves our spirit, soul, and body wholly complete—1 Thes. 5:23:
101 Through the fall our body was ruined, our soul was contaminated, and our spirit was deadened; in God's full salvation our entire being is saved and made complete and perfect.
112 For this, God is preserving our spirit from any deadening element (Heb. 9:14), our soul from remaining natural and old (Matt. 16:24-26), and our body from the ruin of sin (1 Thes. 4:4; Rom. 6:6).
123 Such a preservation by God and His thorough sanctification sustain us to live a holy life unto maturity so that we may meet the Lord in His coming.
145 Although God preserves us, we need to take the responsibility, the initiative, to cooperate with His operation to be preserved by keeping our spirit, soul, and body in the saturating of the Holy Spirit—1 Thes. 5:12-24.