Heb 4:15 - Come boldly to the throne of grace

15 For we do not have a High Priest who cannot sympathize with our weaknesses, but was in all points tempted as we are, yet without sin. 16 Let us therefore come boldly to the throne of grace, that we may obtain mercy and find grace to help in time of need.

It is only when we know Him that we can come boldly before the throne of grace. Like a child who knows a person, the child is very bold in approaching that person. This is the same with us, we need to know the Lord, that we will come boldly to Him.