Numbers 4:25-26 (NIV)
25 They are to carry the curtains of the tabernacle, the Tent of Meeting, its covering and the outer covering of hides of sea cows, the curtains for the entrance to the Tent of Meeting,
26 the curtains of the courtyard surrounding the tabernacle and altar, the curtain for the entrance, the ropes and all the equipment used in its service. The Gershonites are to do all that needs to be done with these things.
The Gershonites were curtain carriers. Led by a priest called Ithamar, the Gershonites carried curtains that were used to set up the tabernacle, the place where the Israelites came to worship. There would be curtains to create an outer courtyard, and then inside the courtyard more curtains to create what was called the Most Holy Place, a special place where only the high priest was allowed to go and enter God's most holy presence.
The curtains played a double-edged role. On one hand, when the people saw the curtains, in a superficial way it reminded them of God's presence. On the other hand, in a deeper way, the curtains also reminded the people that none of them (except for the high priest) could enter God's presence because of their sin.
But after Jesus Christ died, the curtain blocking the most holy place was torn in two from top to bottom (see e.g. Matthew 27:51). By the curtain tearing, it signified that through Jesus' death on the cross our sins no longer separate us from God's presence. Because the curtain was torn, sinners like us have access to God's most holy place, His presence. So now as believers in Jesus Christ, we don't carry curtains; we get to carry His presence!
Here's a question for you: When people see you, do they see curtains or do they see God's presence?
Sometimes we might feel like a curtain, someone who on a superficial level reminds people of God's presence when we say things like "Yeah, I'm a Christian", "Yeah, I go to church", "I believe in Jesus", but then we fear that our imperfect actions, attitude or behaviour, like a curtain, also keep people from experiencing the real presence of God. Don't be discouraged. Instead, remember what Paul says in 2 Corinthians 4:7
2 Corinthians 4:7 (NIV)
7 But we have this treasure in jars of clay to show that this all-surpassing power is from God and not from us.
The fact is: you are a carrier of God's presence. God has forgiven you of every sin and taken away your shame in Jesus Christ. You are righteous and blameless in God's sight because of Jesus. So always remember that you're not a curtain but by God's mercy and grace you are a carrier of God's presence, and when people see you they're getting access to the most holy place.