Maturity in the Lord? How?
One matures in our Lord by surrendering to the indwelling Holy Spirit and opening one’s eyes and heart and ears to the Truth, the word of God (John 17:17), and NO ONE “works” them self to God…this was first demonstrated for you in Genesis 3:21 as Adam attempted to cover his sin and shame with fig leaves yet God denied Adam’s self-righteousness and shed innocent blood Himself and clothed Adam and Eve in an imputed robe of righteousness (2 Corinthians 5:21)…God did the Work Himself…Adam simply received the Work by grace as a Gift by Faith. Jesus Christ did the WORK HIMSELF at Golgotha, you receive the benefits of that WORK by FAITH, alone!
You are saved from death in Hell by believing with a sincere heart that Jesus is Lord who died to pay your sin-debt (John 3:16-18)…this is done by FAITH alone…you have NO PART in this Salvation other than believing what God has done for you and establishing covenant relationship with Him by that FAITH – ALONE!
Once you have established covenant relationship by faith, the Holy Spirit takes-up residence within you (Ephesians 1:13-14) and manifests a change within-you and good works and obedience begin to manifest as a result of sanctification (2 Corinthians 5:17; Galatians 5:16); that is, an anointed work of the Spirit in your life enabling you to be transformed, incrementally, daily, into the image of Christ concerning your behavior, thoughts, desires, deeds…as this is preparation for service in the New Jerusalem. Walk in obedience to the Holy Spirit and you will NOT compromise with the lust of this defiled and dying World (Galatians 5:16). There is NO OTHER WAY (John 14:6).