scio cui credidi
scio cui confido
I know in whom I trust
ob quam causam etiam haec patior sed non confundor scio enim cui credidi et certus sum quia potens est depositum meum servare in illum die
For the which cause I also suffer these things: nevertheless I am not ashamed: for I know whom I have believed, and am persuaded that he is able to keep that which I have committed unto him against that day.