“Let us fix our eyes on Jesus, the author and finisher of your faith…”
Faith in the Greek world basically means “God’s persuasion”. Faith isn’t man’s work. It is God’s. He’s the author and perfecter of your faith. He believes in you and that’s how you’re able to believe in him.
And also, everywhere that says “faith in God” actually translates as “faith of God” in the Greek (Mark 11:22). Not that God needs faith but that your faith in God is sourced from His faith in you.
This is why Paul says there’s “one Lord, one faith, one baptism” (Eph 4:5) and that’s because it’s Christ’s faith we all have. You don’t take part in perfecting or puffing up your faith. Christ does it for you in you. Remember, He is the author (He gave you a measure of faith: Romans 12:3) and finisher (perfecter, completer: Phil 1:6) of Faith.
“…even God, who quickeneth the dead, and calleth those things which be not (visible yet) as though they were”.
Faith isn’t a magical substance. What we understand as faith is merely waking up to a reality that has always been here.