In Matthew 10:29-31 Jesus says, not a single bird can fall
out of the air without His knowing it.
Jesus is teaching by contrast, for if He
cares for the tiniest things of this world, He must care a lot about us.
In fact, God cares so much for us, that He
spared not his own Son, but delivered Him up for us all (Romans 8:32) that whosoever believeth in him
should not perish, but have everlasting life. (John 3:16)