Somewhere along the way we have learned a mistaken concept. We think that it is by our faith that we are saved but not so. My suggestion here is not a new idea. It has been expounded by others. According to the Greek in Galatians 2:20 Paul is actually saying that he lives by the faithfulness of the Son of God.
It makes sense does it not that you and I can never attain to the faithfulness of Christ? There is only one person so free of sin and yet so in love with humanity that he was willing to surrender his life in faithfulness to God.
What we do is believe him, believe in him if you like. As Jesus said to his disciples in John 14, ‘you believe in God, believe in me.’ Trust what he is doing on our behalf.

Say you have an attorney defending you in a criminal trial. You pay this person and you trust that he or she will do the best for you. You believe that they can do this. It’s not you doing the defending. Your belief is not the same as the skill and the experience of the attorney. You might actually say that your life is being saved by the faithfulness of that particular attorney.
The reason this makes a difference is that sometimes we strain to ‘get enough faith’. Faith is not some mysterious power that we conjure up in our hearts or minds. It is simply believing Jesus, taking him at his word. In Romans 10:9 Paul writes that if we confess with our mouths that Jesus is Lord and believe in our hearts that God raised him from the dead we will be saved. And that’s just the beginning but it’s a large, a monumental beginning to get to the place where we believe that the faithfulness of Jesus is enough to secure for us an eternal relationship with the Father, the Son and the Holy Spirit.
It is not our strength or the strength of our faith that saves us but the faithfulness of the Son of God. And then we take a lifetime to live out that belief by following Jesus.