Hi Seetiger33,
You asked, “Is it one or both?” concerning the sacraments. I have trouble with saying that ALL you have to “do” to be saved is to believe. Jesus spent too much time on this earth teaching us “how to get to heaven”, He showed us how to do that!
While Jesus was on this earth, the Apostles spent all of their time with Him, learning from Him. He walked with the Apostles. They witnessed His miracles and listened to what He taught the Jews. They experienced Him. That’s what the Sacraments are. It’s not just one thing, it’s all that Jesus left us, it’s all He gave us while He walked among us. Everyday the Apostles had an experience with Jesus. We can experience Jesus everyday, in some way, but the Sacraments are “tangible” ways that we can ask for that encounter with Jesus. He gives us His sanctifying grace.
The Sacraments are our experience with Jesus. The Apostles wanted us to have what they had while Jesus was here. They experienced Him everyday and they wanted to pass that on to us, therefore, that experience comes to us through the sacraments. These are the main “events” that the Apostles experienced with Jesus.
We can experience Him everyday in the Eucharist that He gave us at the Last Supper. It is our daily encounter with Him - our strength to persevere. Our Baptism is our “membership” into the Body of Christ. It is our initial justification. We become part of His Body. As we grow, we are given other opportunities to encounter Jesus through the other sacraments. Reconciliation or confession to help mend our relationship with Jesus when we separate ourselves from Him - sin, the Eucharist, where we become one with Jesus. He enters our body and becomes one with us and He gives us the strength we need to lives as he commands us to live and to do His work. The sacrament of Marriage where we, as a couple ask Jesus to bless our union and to be part of our union, just like Jesus is the bridegroom and the Church is the bride. The Sacrament of Holy Orders, where a man offers his life back to Jesus to do His will and the will of the Father, just as the Apostles did. The Sacrament of the Sick, where we are annointed with holy oils, just as in the old and new testament, we again are given an opportunity to confess our sins and to mend our relationship with Jesus and to receive His Body and Blood before entering eternity or just to have the strength to overcome an illness. The Sacraments are the way we keep Jesus in forefront of everything we do.
These were the ways that the people and the Apostles encountered Jesus on a daily basis. Why wouldn’t we want the same thing? Jesus said he would send the Holy Spirit to the Apostles to help them remember everything He taught them. The Apostles wanted us to have what they had - that’s why they gave us the Sacraments. We believe that our salvation is ongoing, not a one time thing. That’s why we have the sacraments - to help us to be closer to Jesus and to help us to persevere to the end.