To be transformed is to be metabolically changed in our natural life (Romans 12:2; 2 Corinthians 3:18); to be mature is to be filled with the divine life that changes us. We may be changed in our natural life (transformed) yet not be filled with the divine life (mature). The last stage of transformation is maturity.
The strongest manifestation of Jacob’s maturity in life is the fact that Jacob blessed everyone, including Pharaoh (Genesis 47:7, 10), Jacob’s two grandsons (ch. 48), and his own twelve sons (Genesis 49:1-28). Jacob’s supplanting hands became blessing hands (Genesis 48:14-16). Maturity in life is a matter of being filled with God as life, and blessing is the overflow of life, the overflow of God through the maturity in life. To bless others is to bring them into the presence of God and to bring God into them as grace, love, and fellowship that they may enjoy the Triune God—the Father, the Son, and the Spirit (Genesis 14:18-19; Numbers 6:23-27; 2 Corinthians 13:14). That Jacob blessed Pharaoh indicates that he was greater than Pharaoh (Hebrews 7:7). (Genesis 47:7, footnote 1, Recovery Version)