Isaiah 53:11 “He shall see of the travail of his soul, and shall be satisfied: by his knowledge shall my righteous servant justify many; for he shall bear their iniquities.”
With respect to our Eternal Salvation, the most important thing is not that we know God, but that He knows us. The contextual message here is that God knows His people with such a “great love” (Ephesians 2:4) that nothing can “separate us from the love of God” (Romans 9:39). When God made His choice of a people “before the foundation of the world”, His choice and determination to send His Son to save them from their sins, was in perfect union with His “love” for them (Ephesians 1:4). God’s love is indescribably grand: “God commendeth his love toward us, in that, while we were yet sinners, Christ died for us.” (Romans 5:8), “I live by the faith of the Son of God, who loved me, and gave himself for me” (Galatians 2:20), “Now our Lord Jesus Christ himself, and God, even our Father, which hath loved us, and hath given us everlasting consolation and good hope through grace,” (II Thessalonians 2:16), and “Herein is love, not that we loved God, but that he loved us, and sent his Son to be the propitiation for our sins.” (I John 4:10). God the Father sent His Son to save those that He loves from their sins (Matthew 1:21), and by His loving “knowledge” He has Eternally Justified “many”. He justified those that He loves by bearing “their iniquities” away from them and shedding His Precious “blood” for them (Romans 5:9). Those who “love” “God”, “love” Him “because he first loved us” (I John 4:19). Then John exhorts us to “love”: “Beloved, if God so loved us, we ought also to love one another.” (I John 4:11)!