“Send out your light and your truth; let them guide me. Let them lead me to your holy mountain, to the place where you live. There I will go to the altar of God, to God—the source of all my joy” (Psalm 43:3-4, NLT).
So the psalmist prayed for God’s light and truth to lead him into God’s presence where he could find happiness.
This verse is a Messianic promise because it ultimately finds fulfillment in Jesus Christ.
On several occasions during His earthly ministry Jesus explained that He was the fulfillment of this Messianic promise.
Jesus said that He was the light of God and, as such, He would drive out darkness and bring truth to people’s lives so they would do what is right and be a light to others: “But those who do what is right come to the light so others can see that they are doing what God wants” (John 3:21, NLT).
Jesus told His disciples that He was the light of the world and if you follow Him you will find God’s truth: “I am the light of the world. If you follow me, you won’t have to walk in darkness, because you will have the light that leads to life” (John 8:12, NLT).
When Jesus told His disciples that He was going to die, they were anxious and He reassured them by telling them that He Himself was the way to God: “I am the way, the truth, and the life. No one can come to the Father except through me.” (John 14:6, NLT).
Remember, God sends His light to you to illuminate the way to Him so that you can guide others to Jesus, God’s Light, so they also can find their way to God!