It is a difficult decision, and either answer can be correct according to the context.
Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.
They strengthened Jesus.
I will strengthen you, Yes, I will help you, I will uphold you with My righteous right hand.