You do not always recognize Christianity and salvation in a picture perfect box. It is not always beautiful, well put together people. It is not often people who come from ideal or traditional families; it is never people who have it all together.
You will recognize them by their fruits. Are grapes gathered from thornbushes, or figs from thistles?
Instead, brothers and sisters in Christ can only be recognized by a test of the heart; a test of spiritual fruits and willingness. No, you will never see someone who truly serves the Lord constantly living some fairytale life.
Instead, you will meet simple, broken men and women, not always physically spotless, never perfected outside nor inside. Instead, you will find that true men and women of God are actually nothing some may expect them to be...they are broken, scarred on the inside and outside; they are struggling with problems, secrets, and sins, just like the lost and unbeliever.
The difference remains to be the heart; the separation from sin and eternal damnation, and the forgiveness by the blood of Jesus. Sometimes, you may not recognize some from the outward appearance, and some may be recovering from serious addictions.
because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.
This does not change how they look to a gentle and forgiving God. What gives Christians the ticket to eternal life which an unbeliever lacks, is the complete and ultimate submission to the Lord who saves us from sin. Just as He promised, if we confess our sins and believe, we move from separation from God, to separation from sin; but this takes a lifetime of work on a believers part.
This does not mean that a moment these imperfect people sin, they are separated from God all over again; instead we are called to come out of sin, and live lives of daily repentance and submission to Christ. These imperfect and broken hearts are not instantaneously sanctified when they become a Christian, they are just a body in Christ, who have admitted to God they cannot do anything on their own, and are set apart for a lifetime of lessons and schooling in Christ.
1 Samuel 16:7
...”Do not look on his appearance or on the height of his stature, because I have rejected him. For the LORD sees not as man sees: man looks on the outward appearance, but the LORD looks on the heart.”