Why I Am Not Roman Catholic

There is no "both-and" with Jesus, only "either-or." Either Jesus is the only Savior, the perfect Savior, and your only comfort in life and death, or Jesus is for you no Savior at all.  - Kevin DeYoung's The Good News We Almost Forgot

Q. Do those who seek their salvation or well-being in saints, in themselves, or anywhere else, also believe in the only Savior Jesus? 

A. No. Though they boast of Him in words, they in fact deny the only Savior Jesus. 

1 Corinthians 1:12,13 Now I say this, that each of you says, “I am of Paul,” or “I am of Apollos,” or “I am of Cephas,” or “I am of Christ.” 13 Is Christ divided? Was Paul crucified for you? Or were you baptized in the name of Paul? 

Galatians 5:4 You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace. 

For one of two things must be true: 

• either Jesus is not a complete Savior, 
• or those who by true faith accept this Savior must find in Him all that is necessary for their salvation.

Colossians 1:19,20 For it pleased the Father that in Him all the fullness should dwell, 20 and by Him to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross. 

Colossians 2:10 …and you are complete in Him, who is the head of all principality and power. 

1 John 1:7 But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin.

The Heidelberg Catechism Lord's Day 11