A renewed spirit means you receive God's Holy Spirit. Jesus said I will not leave you comfortless, I will pray the Father and he shall give you another comforter, that he may abide with you forever even the Spirit of Truth (John 14:16-17).
When you receive God's Holy Spirit he will guide you into all truth. God freely gives his Holy Spirit to those who ask (Luke 11:13). The Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us with groaning that words cannot express and he who searches our hearts knows the mind of the Spirit because the Spirit intercedes for the saints according to the will of God (Romans 8:26-27).
The Kingdom of God is not meat and drink, but righteousness, and peace, and you in the Holy Spirit. God is Love and with loving-kindness, he has drawn us. Ephesians 3:17-19 offers this prayer...that Christ may dwell in your hearts by faith, that you being rooted and grounded in love, may be able to comprehend with all saints what is the breadth, and length, and depth, and height; and to know the love of Christ, which passes knowledge, that ye might be filled with all the fullness of God. Amen