(He) is referring to Jesus. Jesus was with God in the beginning of all creation. Through Jesus all things were made, through Him and for Him. This verse emphasizes Jesus’ role as the messenger of the Father, it also explains that He is the only way to return to the Father. As Christians we each have a personal testimony that can help lead others to Jesus Christ. Jesus is the Way, the Truth and the Life, no one comes to the Father except through Him.