Do you think it a work? I am unsure where you are going with this. Faith is a gift, as I have said. Does it not follow repentance on our part? Changing our mind about God? We do not garner faith from disbelief, after all. Jesus called us to repentance. It is how He started His earthly ministry, following His baptism and temptation in the desert. Scriptures multiple times exhort us to choose. Choose this day whom you will serve, for example.So, in other words, what belief is, is a work of God.
Mark 1:15 (Jesus speaking)
"The time has come," he said. "The kingdom of God
has come near. Repent and believe the good news!"