Okay, Grace, believe what you want to believe. I don't care, but you still haven't explained where you get that the baptism is just an outward expression of what has taken place already inwardly etc.
I believe that Jesus died to atone for
my personal sins against God. This means I know that I deserve to be condemned to hell for my sins, but I trust that I will go to heaven because Jesus has already paid the penalty for me by dying on the cross as my Substitute. I also Believe that Jesus, the Son of God, was resurrected from the dead.
Our actions don't
cause us to have faith, but instead faith leads us to perform actions of obedience. If we're not willing to
demonstrate our faith outwardly then it's questionable whether we truly have proper faith in Jesus. (James 2)
There are no contradictions anywhere in the Bible because the Bible was written by God (through human authors). If we interpret a passage in a way which conflicts with other passages, this tells us that something is wrong with our interpretation since we don't have
harmony among all of those passages.
Cornelius was simply acting out his faith in water baptism.
Is it possible that God allowed Cornelius and his household to receive the Holy Spirit before they were saved? The New Testament clearly teaches that the gift of the Holy Spirit is only given to Christians (John 7:37-39, Acts 1:4-8, 2:1-4, 38-39, 8:14-17, 19:1-7, Romans 8:9), so it violates Scripture to say that God would give this gift to people who are
not saved. Notice that we are specifically told that God accepted Cornelius and his household and purified their hearts by faith
before He gave them the Holy Spirit:
"After much discussion, Peter got up and addressed them [the Christian Jews in Jerusalem]: "Brothers, you know that some time ago God made a choice among you that the
Gentiles [Cornelius and his household] might hear from my lips
the message of the gospel and believe. God, who knows the heart, showed that he accepted them by giving the Holy Spirit to them, just as he did to us. He made no distinction between us and them, for he purified their hearts by faith."" (Acts 15:7-9)
If you compare this passage with Acts 11:13-18, you'll see that Cornelius and his household are being referred to in both places. This passage says that when Cornelius and his household
believed the message of the Gospel, God "knew their hearts" and "accepted them" and "purified their hearts by faith." Then God "showed that He accepted them" into the Kingdom "by giving the Holy Spirit to them." All of this happened before they were baptized in water! Cornelius and his household were not a "special case" in the way that they received salvation because Peter specifically said that God "
made no distinction between us and them, for he purified their hearts by faith" (Acts 15:9). In other words, God brought Cornelius and his household into the Kingdom in exactly the same way that He brings everyone else into the Kingdom. Cornelius and his household received salvation
before they were baptized in water, and the context shows that the apostles considered this to be the normal way that salvation works.