Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.Hebrews 4:16 (KJV)
As with all Bible verses, context is extremely important. In this case, when working with a verse that starts with the word “therefore,” it is imperative that we look at what was said before to gain a proper understanding. The previous verse makes a noteworthy statement about one of the the distinctions that Yeshua holds.
For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.Hebrews 4:15 (KJV)
The verse notes that when Yeshua walked on this earth, he was not so divine as to not be given unto temptation. This can also be seen in his trials in the wilderness when the adversary tempted Him. If he could not be tempted, there would be no point to the actions of the adversary. More importantly, He could not be the proper example as a high priest. Yeshua faced the same type of earthly temptations that we face and yet overcame them and remained sinless.
Now we can see why we must come boldly unto the throne of grace. We are not without sin and cannot turn inwardly or to any person on earth for grace, but by fervently bowing before our Lord and Savior, we may obtain mercy.