The light is for the purpose of casting the shadow on the substance that it shines on. If there is no shadow then there is no substance. Faith is substance. The shadow is for us to detect where the substance is located by the light.
Galatians 3:24-25
24 Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
25 But after that faith is come , we are no longer under a schoolmaster.
After faith the schoolmaster remains, for a schoolmaster, in the tradition for those Paul wrote to, this was to direct children to school without losing direction. After faith, we know the direction but the route stays the same. This direction that the schoolmaster showed us still remains for us to use and bring others to Christ.
"For the law having a shadow of good things to come , and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect." Hebrews 10:1
Physical temple worship never finished with sacrifices, but Jesus did. The physical Priesthood and the physical temple are gone, but our responsibility to reciprocate in the love of God is not. We live by EVERY word that God has ever spoken. That's the way Jesus warded of Satan during His 40 days of temptation.
"Let this mind be in you, which was also in Christ Jesus:" Philippians 2:5
Blessings toward you sis.